diff --git a/brukerapi/config/properties_2dseq_custom.json b/brukerapi/config/properties_2dseq_custom.json
index 4ffc0ed..068f8b4 100644
--- a/brukerapi/config/properties_2dseq_custom.json
+++ b/brukerapi/config/properties_2dseq_custom.json
@@ -1,7 +1,7 @@
 {
   "subj_id": [
       {
-        "cmd": "#VisuSubjectName",
+        "cmd": "#VisuSubjectId",
         "conditions": [
         ]
       },
@@ -13,7 +13,19 @@
   ],
   "study_id": [
       {
-        "cmd": "str(#VisuStudyNumber)",
+        "cmd": "#VisuStudyId",
+        "conditions": [
+        ]
+      },
+      {
+        "cmd": "''",
+        "conditions": [
+        ]
+      }
+  ],
+  "study_nr": [
+      {
+        "cmd": "#VisuStudyNumber",
         "conditions": [
         ]
       },
@@ -49,7 +61,7 @@
   ],
   "id": [
       {
-        "cmd": "'2DSEQ_{}_{}_{}_{}'.format(@exp_id, @proc_id, @subj_id, @study_id)",
+        "cmd": "'2DSEQ_{}_{}_{}_{}'.format(@exp_id, @proc_id, @subj_id, @study_nr)",
         "conditions": [
         ]
       }
diff --git a/brukerapi/config/properties_fid_custom.json b/brukerapi/config/properties_fid_custom.json
index cd32ce5..13a1158 100644
--- a/brukerapi/config/properties_fid_custom.json
+++ b/brukerapi/config/properties_fid_custom.json
@@ -15,7 +15,21 @@
   ],
   "study_id": [
     {
-      "cmd": "str(#SUBJECT_study_nr)",
+      "cmd": "#SUBJECT_study_name",
+      "conditions": [
+
+      ]
+    },
+    {
+      "cmd": "''",
+      "conditions": [
+
+      ]
+    }
+  ],
+  "study_nr": [
+    {
+      "cmd": "#SUBJECT_study_nr",
       "conditions": [
 
       ]
@@ -43,7 +57,7 @@
   ],
   "id": [
     {
-      "cmd": "'FID_{}_{}_{}'.format(@exp_id, @subj_id, @study_id)",
+      "cmd": "'FID_{}_{}_{}'.format(@exp_id, @subj_id, @study_nr)",
       "conditions": [
       ]
     }
diff --git a/brukerapi/config/properties_fid_proc_custom.json b/brukerapi/config/properties_fid_proc_custom.json
index bbff1e1..5ae0f8b 100644
--- a/brukerapi/config/properties_fid_proc_custom.json
+++ b/brukerapi/config/properties_fid_proc_custom.json
@@ -11,7 +11,17 @@
   ],
   "study_id": [
     {
-      "cmd": "str(#SUBJECT_study_nr)",
+      "cmd": "#SUBJECT_study_name",
+      "conditions": []
+    },
+    {
+      "cmd": "''",
+      "conditions": []
+    }
+  ],
+  "study_nr": [
+    {
+      "cmd": "#SUBJECT_study_nr",
       "conditions": []
     },
     {
@@ -41,7 +51,7 @@
   ],
   "id": [
     {
-      "cmd": "'{}_{}_{}_{}_{}'.format(@type.upper(), @exp_id, @proc_id, @subj_id, @study_id)",
+      "cmd": "'{}_{}_{}_{}_{}'.format(@type.upper(), @exp_id, @proc_id, @subj_id, @study_nr)",
       "conditions": [],
       "comment": "spec 3.5: these live in the PROCNO, so the id names the reconstruction as a 2dseq id does"
     }
diff --git a/brukerapi/config/properties_rawdata_custom.json b/brukerapi/config/properties_rawdata_custom.json
index 36d64f9..3476ffb 100644
--- a/brukerapi/config/properties_rawdata_custom.json
+++ b/brukerapi/config/properties_rawdata_custom.json
@@ -15,7 +15,21 @@
   ],
   "study_id": [
     {
-      "cmd": "str(#SUBJECT_study_nr)",
+      "cmd": "#SUBJECT_study_name",
+      "conditions": [
+
+      ]
+    },
+    {
+      "cmd": "''",
+      "conditions": [
+
+      ]
+    }
+  ],
+  "study_nr": [
+    {
+      "cmd": "#SUBJECT_study_nr",
       "conditions": [
 
       ]
@@ -43,7 +57,7 @@
   ],
   "id": [
     {
-      "cmd": "f'RawData_{@subtype}_{@exp_id}_{@subj_id}_{@study_id}'",
+      "cmd": "f'RawData_{@subtype}_{@exp_id}_{@subj_id}_{@study_nr}'",
       "conditions": [
       ]
     }
diff --git a/brukerapi/config/properties_traj_custom.json b/brukerapi/config/properties_traj_custom.json
index 55724b3..4291136 100644
--- a/brukerapi/config/properties_traj_custom.json
+++ b/brukerapi/config/properties_traj_custom.json
@@ -11,7 +11,17 @@
   ],
   "study_id": [
     {
-      "cmd": "str(#SUBJECT_study_nr)",
+      "cmd": "#SUBJECT_study_name",
+      "conditions": []
+    },
+    {
+      "cmd": "''",
+      "conditions": []
+    }
+  ],
+  "study_nr": [
+    {
+      "cmd": "#SUBJECT_study_nr",
       "conditions": []
     },
     {
@@ -31,7 +41,7 @@
   ],
   "id": [
     {
-      "cmd": "'Traj_{}*{}*{}'.format(@exp_id, @subj_id, @study_id)",
+      "cmd": "'Traj_{}*{}*{}'.format(@exp_id, @subj_id, @study_nr)",
       "conditions": []
     }
   ]
diff --git a/brukerapi/dataset.py b/brukerapi/dataset.py
index 0232022..0e1a282 100644
--- a/brukerapi/dataset.py
+++ b/brukerapi/dataset.py
@@ -1252,6 +1252,7 @@ def to_dict(self, props=None):
             "_schema",
             "random_access",
             "study_id",
+            "study_nr",
             "exp_id",
             "proc_id",
             "subj_id",
diff --git a/test/config/properties_0.2H2.json b/test/config/properties_0.2H2.json
index f823a6c..beaf2db 100644
--- a/test/config/properties_0.2H2.json
+++ b/test/config/properties_0.2H2.json
@@ -1,5 +1,5 @@
 {
-    "2DSEQ_10_1_LEGO_PHANTOM_2": {
+    "2DSEQ_10_1_0_2": {
         "TE": 2,
         "TR": 4,
         "affine": [
@@ -42,7 +42,7 @@
             50,
             50
         ],
-        "id": "2DSEQ_10_1_LEGO_PHANTOM_2",
+        "id": "2DSEQ_10_1_0_2",
         "imaging_frequency": 400.322522538113,
         "is_single_slice": false,
         "num_slice_packages": 1,
@@ -86,7 +86,7 @@
             182.269660998766
         ]
     },
-    "2DSEQ_11_1_LEGO_PHANTOM_2": {
+    "2DSEQ_11_1_0_2": {
         "TE": 6,
         "TR": 20,
         "affine": [
@@ -129,7 +129,7 @@
             50,
             1
         ],
-        "id": "2DSEQ_11_1_LEGO_PHANTOM_2",
+        "id": "2DSEQ_11_1_0_2",
         "imaging_frequency": 400.322522538113,
         "is_single_slice": true,
         "num_slice_packages": 1,
@@ -174,7 +174,7 @@
             0.000915569254904989
         ]
     },
-    "2DSEQ_12_1_LEGO_PHANTOM_2": {
+    "2DSEQ_12_1_0_2": {
         "TE": 20,
         "TR": 1500,
         "affine": [
@@ -217,7 +217,7 @@
             50.0,
             10.0
         ],
-        "id": "2DSEQ_12_1_LEGO_PHANTOM_2",
+        "id": "2DSEQ_12_1_0_2",
         "imaging_frequency": 400.322522538113,
         "is_single_slice": false,
         "num_slice_packages": 1,
@@ -286,7 +286,7 @@
             151.31449775852
         ]
     },
-    "2DSEQ_13_1_LEGO_PHANTOM_2": {
+    "2DSEQ_13_1_0_2": {
         "TE": 24.818,
         "TR": 1000,
         "affine": [
@@ -328,7 +328,7 @@
             50.0,
             20.0
         ],
-        "id": "2DSEQ_13_1_LEGO_PHANTOM_2",
+        "id": "2DSEQ_13_1_0_2",
         "imaging_frequency": 400.322522538113,
         "is_single_slice": false,
         "num_slice_packages": 1,
@@ -375,7 +375,7 @@
             565.46586457527
         ]
     },
-    "2DSEQ_14_1_LEGO_PHANTOM_2": {
+    "2DSEQ_14_1_0_2": {
         "TE": 24.279,
         "TR": 4000,
         "affine": [
@@ -419,7 +419,7 @@
             50.0,
             1.5
         ],
-        "id": "2DSEQ_14_1_LEGO_PHANTOM_2",
+        "id": "2DSEQ_14_1_0_2",
         "imaging_frequency": 400.322522538113,
         "is_single_slice": true,
         "num_slice_packages": 1,
@@ -482,7 +482,7 @@
             52.6828980096941
         ]
     },
-    "2DSEQ_15_1_LEGO_PHANTOM_2": {
+    "2DSEQ_15_1_0_2": {
         "TE": 49.0008,
         "TR": 1500.001,
         "affine": [
@@ -525,7 +525,7 @@
             50.0,
             15.0
         ],
-        "id": "2DSEQ_15_1_LEGO_PHANTOM_2",
+        "id": "2DSEQ_15_1_0_2",
         "imaging_frequency": 400.322522538113,
         "is_single_slice": false,
         "num_slice_packages": 1,
@@ -620,7 +620,7 @@
             53.6282571882034
         ]
     },
-    "2DSEQ_16_1_LEGO_PHANTOM_2": {
+    "2DSEQ_16_1_0_2": {
         "TE": 45.788,
         "TR": 10000,
         "affine": [
@@ -663,7 +663,7 @@
             50,
             2
         ],
-        "id": "2DSEQ_16_1_LEGO_PHANTOM_2",
+        "id": "2DSEQ_16_1_0_2",
         "imaging_frequency": 400.322522538113,
         "is_single_slice": true,
         "num_slice_packages": 1,
@@ -736,7 +736,7 @@
             65.0506197119759
         ]
     },
-    "2DSEQ_17_1_LEGO_PHANTOM_2": {
+    "2DSEQ_17_1_0_2": {
         "TE": [
             90.362,
             180.724,
@@ -788,7 +788,7 @@
             50.0,
             30.0
         ],
-        "id": "2DSEQ_17_1_LEGO_PHANTOM_2",
+        "id": "2DSEQ_17_1_0_2",
         "imaging_frequency": 400.322522538113,
         "is_single_slice": false,
         "num_slice_packages": 1,
@@ -1069,7 +1069,7 @@
             257.301041366432
         ]
     },
-    "2DSEQ_18_1_LEGO_PHANTOM_2": {
+    "2DSEQ_18_1_0_2": {
         "TE": [
             17.438,
             39.93,
@@ -1117,7 +1117,7 @@
             50,
             2
         ],
-        "id": "2DSEQ_18_1_LEGO_PHANTOM_2",
+        "id": "2DSEQ_18_1_0_2",
         "imaging_frequency": 400.322522538113,
         "is_single_slice": true,
         "num_slice_packages": 1,
@@ -1166,7 +1166,7 @@
             61.0842873359424
         ]
     },
-    "2DSEQ_1_1_LEGO_PHANTOM_2": {
+    "2DSEQ_1_1_0_2": {
         "TE": 3,
         "TR": 200,
         "affine": [
@@ -1208,7 +1208,7 @@
             60.0,
             30.0
         ],
-        "id": "2DSEQ_1_1_LEGO_PHANTOM_2",
+        "id": "2DSEQ_1_1_0_2",
         "imaging_frequency": 400.322522538113,
         "is_single_slice": false,
         "num_slice_packages": 3,
@@ -1279,7 +1279,7 @@
             68.0388746198903
         ]
     },
-    "2DSEQ_21_1_LEGO_PHANTOM_2": {
+    "2DSEQ_21_1_0_2": {
         "TE": 0.316319272829721,
         "TR": 30,
         "affine": [
@@ -1321,7 +1321,7 @@
             50.0,
             6.0
         ],
-        "id": "2DSEQ_21_1_LEGO_PHANTOM_2",
+        "id": "2DSEQ_21_1_0_2",
         "imaging_frequency": 400.322522538113,
         "is_single_slice": false,
         "num_slice_packages": 1,
@@ -1368,7 +1368,7 @@
             2.49152751238897
         ]
     },
-    "2DSEQ_22_1_LEGO_PHANTOM_2": {
+    "2DSEQ_22_1_0_2": {
         "TE": 0.02,
         "TR": 8,
         "affine": [
@@ -1411,7 +1411,7 @@
             50,
             50
         ],
-        "id": "2DSEQ_22_1_LEGO_PHANTOM_2",
+        "id": "2DSEQ_22_1_0_2",
         "imaging_frequency": 400.322522538113,
         "is_single_slice": false,
         "num_slice_packages": 1,
@@ -1455,7 +1455,7 @@
             1.37425787550869
         ]
     },
-    "2DSEQ_23_1_LEGO_PHANTOM_2": {
+    "2DSEQ_23_1_0_2": {
         "TE": 0,
         "TR": 4,
         "affine": [
@@ -1498,7 +1498,7 @@
             50,
             50
         ],
-        "id": "2DSEQ_23_1_LEGO_PHANTOM_2",
+        "id": "2DSEQ_23_1_0_2",
         "imaging_frequency": 400.322522538113,
         "is_single_slice": false,
         "num_slice_packages": 1,
@@ -1542,7 +1542,7 @@
             1.41252549223342
         ]
     },
-    "2DSEQ_24_1_LEGO_PHANTOM_2": {
+    "2DSEQ_24_1_0_2": {
         "TR": 1200,
         "date": "2020-06-16 15:13:18",
         "dim_type": [
@@ -1553,7 +1553,7 @@
         ],
         "dwell_s": 0.00012480000000000002,
         "encoded_dim": 3,
-        "id": "2DSEQ_24_1_LEGO_PHANTOM_2",
+        "id": "2DSEQ_24_1_0_2",
         "imaging_frequency": 400.322522538113,
         "is_single_slice": false,
         "num_slice_packages": 1,
@@ -1592,7 +1592,7 @@
             0.610878945064932
         ]
     },
-    "2DSEQ_25_1_LEGO_PHANTOM_2": {
+    "2DSEQ_25_1_0_2": {
         "TE": [
             1.537,
             5.537
@@ -1638,7 +1638,7 @@
             50,
             50
         ],
-        "id": "2DSEQ_25_1_LEGO_PHANTOM_2",
+        "id": "2DSEQ_25_1_0_2",
         "imaging_frequency": 400.322522538113,
         "is_single_slice": false,
         "num_slice_packages": 1,
@@ -1684,7 +1684,7 @@
             0.0015559824536877
         ]
     },
-    "2DSEQ_26_1_LEGO_PHANTOM_2": {
+    "2DSEQ_26_1_0_2": {
         "TE": 0,
         "TR": 800,
         "date": "2020-06-16 15:13:18",
@@ -1694,7 +1694,7 @@
         ],
         "dwell_s": null,
         "encoded_dim": 1,
-        "id": "2DSEQ_26_1_LEGO_PHANTOM_2",
+        "id": "2DSEQ_26_1_0_2",
         "imaging_frequency": 400.322522538113,
         "is_single_slice": false,
         "num_slice_packages": 1,
@@ -1728,7 +1728,7 @@
             32031.3476742137
         ]
     },
-    "2DSEQ_27_1_LEGO_PHANTOM_2": {
+    "2DSEQ_27_1_0_2": {
         "TE": 0,
         "date": "2020-06-16 15:13:18",
         "dim_type": [
@@ -1737,7 +1737,7 @@
         ],
         "dwell_s": 0.00012480000000000002,
         "encoded_dim": 1,
-        "id": "2DSEQ_27_1_LEGO_PHANTOM_2",
+        "id": "2DSEQ_27_1_0_2",
         "imaging_frequency": 400.322522538113,
         "is_single_slice": false,
         "num_slice_packages": 1,
@@ -1767,7 +1767,7 @@
             0.0783475008622457
         ]
     },
-    "2DSEQ_28_1_LEGO_PHANTOM_2": {
+    "2DSEQ_28_1_0_2": {
         "TE": 0,
         "date": "2020-06-16 15:13:18",
         "dim_type": [
@@ -1776,7 +1776,7 @@
         ],
         "dwell_s": 8.320000000000002e-05,
         "encoded_dim": 1,
-        "id": "2DSEQ_28_1_LEGO_PHANTOM_2",
+        "id": "2DSEQ_28_1_0_2",
         "imaging_frequency": 400.322522538113,
         "is_single_slice": false,
         "num_slice_packages": 1,
@@ -1806,7 +1806,7 @@
             0.0188149760445386
         ]
     },
-    "2DSEQ_2_1_LEGO_PHANTOM_2": {
+    "2DSEQ_2_1_0_2": {
         "TE": 6,
         "TR": 100,
         "affine": [
@@ -1848,7 +1848,7 @@
             50.0,
             12.0
         ],
-        "id": "2DSEQ_2_1_LEGO_PHANTOM_2",
+        "id": "2DSEQ_2_1_0_2",
         "imaging_frequency": 400.322522538113,
         "is_single_slice": false,
         "num_slice_packages": 1,
@@ -1893,7 +1893,7 @@
             153.274237284458
         ]
     },
-    "2DSEQ_31_1_LEGO_PHANTOM_2": {
+    "2DSEQ_31_1_0_2": {
         "TE": [
             10,
             30,
@@ -1950,7 +1950,7 @@
             50,
             1
         ],
-        "id": "2DSEQ_31_1_LEGO_PHANTOM_2",
+        "id": "2DSEQ_31_1_0_2",
         "imaging_frequency": 400.322522538113,
         "is_single_slice": true,
         "num_slice_packages": 1,
@@ -2053,7 +2053,7 @@
             98.9442691872253
         ]
     },
-    "2DSEQ_31_2_LEGO_PHANTOM_2": {
+    "2DSEQ_31_2_0_2": {
         "TR": [
             5500,
             3000,
@@ -2103,7 +2103,7 @@
             50,
             1
         ],
-        "id": "2DSEQ_31_2_LEGO_PHANTOM_2",
+        "id": "2DSEQ_31_2_0_2",
         "is_single_slice": true,
         "num_slice_packages": 1,
         "numpy_dtype": "int32",
@@ -2205,7 +2205,7 @@
             0.000244140625
         ]
     },
-    "2DSEQ_31_3_LEGO_PHANTOM_2": {
+    "2DSEQ_31_3_0_2": {
         "TE": [
             10,
             30,
@@ -2254,7 +2254,7 @@
             50,
             1
         ],
-        "id": "2DSEQ_31_3_LEGO_PHANTOM_2",
+        "id": "2DSEQ_31_3_0_2",
         "is_single_slice": true,
         "num_slice_packages": 1,
         "numpy_dtype": "int32",
@@ -2346,7 +2346,7 @@
             3.0517578125e-05
         ]
     },
-    "2DSEQ_32_1_LEGO_PHANTOM_2": {
+    "2DSEQ_32_1_0_2": {
         "TE": 23.5,
         "TR": 3800,
         "affine": [
@@ -2389,7 +2389,7 @@
             40.0,
             22.5
         ],
-        "id": "2DSEQ_32_1_LEGO_PHANTOM_2",
+        "id": "2DSEQ_32_1_0_2",
         "imaging_frequency": 400.322522538113,
         "is_single_slice": false,
         "num_slice_packages": 1,
@@ -3480,7 +3480,7 @@
             0.00396825760804928
         ]
     },
-    "2DSEQ_32_2_LEGO_PHANTOM_2": {
+    "2DSEQ_32_2_0_2": {
         "affine": [
             [
                 0.3125,
@@ -3521,7 +3521,7 @@
             40.0,
             22.5
         ],
-        "id": "2DSEQ_32_2_LEGO_PHANTOM_2",
+        "id": "2DSEQ_32_2_0_2",
         "is_single_slice": false,
         "num_slice_packages": 1,
         "numpy_dtype": "int32",
@@ -4221,7 +4221,7 @@
             1e-06
         ]
     },
-    "2DSEQ_33_1_LEGO_PHANTOM_2": {
+    "2DSEQ_33_1_0_2": {
         "TE": [
             11,
             22,
@@ -4281,7 +4281,7 @@
             50,
             1
         ],
-        "id": "2DSEQ_33_1_LEGO_PHANTOM_2",
+        "id": "2DSEQ_33_1_0_2",
         "imaging_frequency": 400.322522538113,
         "is_single_slice": true,
         "num_slice_packages": 1,
@@ -4354,7 +4354,7 @@
             0.00166073135632915
         ]
     },
-    "2DSEQ_33_2_LEGO_PHANTOM_2": {
+    "2DSEQ_33_2_0_2": {
         "affine": [
             [
                 0.390625,
@@ -4395,7 +4395,7 @@
             50,
             1
         ],
-        "id": "2DSEQ_33_2_LEGO_PHANTOM_2",
+        "id": "2DSEQ_33_2_0_2",
         "is_single_slice": true,
         "num_slice_packages": 1,
         "numpy_dtype": "int32",
@@ -4445,7 +4445,7 @@
             0.0009765625
         ]
     },
-    "2DSEQ_33_3_LEGO_PHANTOM_2": {
+    "2DSEQ_33_3_0_2": {
         "affine": [
             [
                 0.390625,
@@ -4486,7 +4486,7 @@
             50,
             1
         ],
-        "id": "2DSEQ_33_3_LEGO_PHANTOM_2",
+        "id": "2DSEQ_33_3_0_2",
         "is_single_slice": true,
         "num_slice_packages": 1,
         "numpy_dtype": "int32",
@@ -4536,7 +4536,7 @@
             0.0009765625
         ]
     },
-    "2DSEQ_35_1_LEGO_PHANTOM_2": {
+    "2DSEQ_35_1_0_2": {
         "TE": 2.90666666666667,
         "TR": 8,
         "affine": [
@@ -4580,7 +4580,7 @@
             50,
             1
         ],
-        "id": "2DSEQ_35_1_LEGO_PHANTOM_2",
+        "id": "2DSEQ_35_1_0_2",
         "imaging_frequency": 400.322522538113,
         "is_single_slice": true,
         "num_slice_packages": 1,
@@ -4643,7 +4643,7 @@
             0.000189802173865093
         ]
     },
-    "2DSEQ_3_1_LEGO_PHANTOM_2": {
+    "2DSEQ_3_1_0_2": {
         "TE": [
             4,
             10,
@@ -4696,7 +4696,7 @@
             60.0,
             16.0
         ],
-        "id": "2DSEQ_3_1_LEGO_PHANTOM_2",
+        "id": "2DSEQ_3_1_0_2",
         "imaging_frequency": 400.322522538113,
         "is_single_slice": false,
         "num_slice_packages": 1,
@@ -4881,7 +4881,7 @@
             76.6238619262818
         ]
     },
-    "2DSEQ_4_1_LEGO_PHANTOM_2": {
+    "2DSEQ_4_1_0_2": {
         "TE": [
             15.8175,
             36.9075
@@ -4927,7 +4927,7 @@
             50.0,
             16.0
         ],
-        "id": "2DSEQ_4_1_LEGO_PHANTOM_2",
+        "id": "2DSEQ_4_1_0_2",
         "imaging_frequency": 400.322522538113,
         "is_single_slice": false,
         "num_slice_packages": 1,
@@ -4984,7 +4984,7 @@
             295.909058565224
         ]
     },
-    "2DSEQ_5_1_LEGO_PHANTOM_2": {
+    "2DSEQ_5_1_0_2": {
         "TE": [
             56,
             168
@@ -5031,7 +5031,7 @@
             50.0,
             9.0
         ],
-        "id": "2DSEQ_5_1_LEGO_PHANTOM_2",
+        "id": "2DSEQ_5_1_0_2",
         "imaging_frequency": 400.322522538113,
         "is_single_slice": false,
         "num_slice_packages": 1,
@@ -5110,7 +5110,7 @@
             76.2645359359099
         ]
     },
-    "2DSEQ_6_1_LEGO_PHANTOM_2": {
+    "2DSEQ_6_1_0_2": {
         "TE": 15,
         "TR": 3000,
         "affine": [
@@ -5155,7 +5155,7 @@
             50,
             1
         ],
-        "id": "2DSEQ_6_1_LEGO_PHANTOM_2",
+        "id": "2DSEQ_6_1_0_2",
         "imaging_frequency": 400.322522538113,
         "is_single_slice": true,
         "num_slice_packages": 1,
@@ -5240,7 +5240,7 @@
             116.699247196268
         ]
     },
-    "2DSEQ_7_1_LEGO_PHANTOM_2": {
+    "2DSEQ_7_1_0_2": {
         "TE": [
             14,
             42,
@@ -5289,7 +5289,7 @@
             50.0,
             12.5
         ],
-        "id": "2DSEQ_7_1_LEGO_PHANTOM_2",
+        "id": "2DSEQ_7_1_0_2",
         "imaging_frequency": 400.322522538113,
         "is_single_slice": false,
         "num_slice_packages": 1,
@@ -5372,7 +5372,7 @@
             161.012696069596
         ]
     },
-    "2DSEQ_8_1_LEGO_PHANTOM_2": {
+    "2DSEQ_8_1_0_2": {
         "TE": 19,
         "TR": 3000,
         "affine": [
@@ -5415,7 +5415,7 @@
             50,
             1
         ],
-        "id": "2DSEQ_8_1_LEGO_PHANTOM_2",
+        "id": "2DSEQ_8_1_0_2",
         "imaging_frequency": 400.322522538113,
         "is_single_slice": true,
         "num_slice_packages": 1,
@@ -5460,7 +5460,7 @@
             396.459816812455
         ]
     },
-    "2DSEQ_9_1_LEGO_PHANTOM_2": {
+    "2DSEQ_9_1_0_2": {
         "TE": 5,
         "TR": 4000,
         "affine": [
@@ -5503,7 +5503,7 @@
             50,
             5
         ],
-        "id": "2DSEQ_9_1_LEGO_PHANTOM_2",
+        "id": "2DSEQ_9_1_0_2",
         "imaging_frequency": 400.322522538113,
         "is_single_slice": false,
         "num_slice_packages": 1,
diff --git a/test/config/properties_PV360_StdData.json b/test/config/properties_PV360_StdData.json
index b1e54eb..790943f 100644
--- a/test/config/properties_PV360_StdData.json
+++ b/test/config/properties_PV360_StdData.json
@@ -1,5 +1,5 @@
 {
-    "2DSEQ_DTI_EPI_seg_30dir_sat_1_std_PV360_3.6^^^^_1": {
+    "2DSEQ_DTI_EPI_seg_30dir_sat_1_std_PV360_3.6_1": {
         "TE": 36,
         "TR": 2000,
         "affine": [
@@ -42,7 +42,7 @@
             15.0,
             5.249999999999999
         ],
-        "id": "2DSEQ_DTI_EPI_seg_30dir_sat_1_std_PV360_3.6^^^^_1",
+        "id": "2DSEQ_DTI_EPI_seg_30dir_sat_1_std_PV360_3.6_1",
         "imaging_frequency": 400.38072797888503,
         "is_single_slice": false,
         "num_slice_packages": 1,
@@ -433,7 +433,7 @@
             41.818209641992354
         ]
     },
-    "2DSEQ_DTI_EPI_seg_30dir_sat_2_std_PV360_3.6^^^^_1": {
+    "2DSEQ_DTI_EPI_seg_30dir_sat_2_std_PV360_3.6_1": {
         "TE": 36,
         "TR": 2000,
         "affine": [
@@ -476,7 +476,7 @@
             15.0,
             5.249999999999999
         ],
-        "id": "2DSEQ_DTI_EPI_seg_30dir_sat_2_std_PV360_3.6^^^^_1",
+        "id": "2DSEQ_DTI_EPI_seg_30dir_sat_2_std_PV360_3.6_1",
         "imaging_frequency": 400.38072797888503,
         "is_single_slice": false,
         "num_slice_packages": 1,
@@ -747,7 +747,7 @@
             4.656612876329999e-10
         ]
     },
-    "2DSEQ_DTI_EPI_seg_30dir_sat_multi_1_std_PV360_3.6^^^^_1": {
+    "2DSEQ_DTI_EPI_seg_30dir_sat_multi_1_std_PV360_3.6_1": {
         "TE": 36,
         "TR": 2000,
         "affine": [
@@ -790,7 +790,7 @@
             15.0,
             5.249999999999999
         ],
-        "id": "2DSEQ_DTI_EPI_seg_30dir_sat_multi_1_std_PV360_3.6^^^^_1",
+        "id": "2DSEQ_DTI_EPI_seg_30dir_sat_multi_1_std_PV360_3.6_1",
         "imaging_frequency": 400.38072797888503,
         "is_single_slice": false,
         "num_slice_packages": 1,
@@ -1481,7 +1481,7 @@
             42.265919849004014
         ]
     },
-    "2DSEQ_DTI_EPI_seg_30dir_sat_multi_2_std_PV360_3.6^^^^_1": {
+    "2DSEQ_DTI_EPI_seg_30dir_sat_multi_2_std_PV360_3.6_1": {
         "TE": 36,
         "TR": 2000,
         "affine": [
@@ -1524,7 +1524,7 @@
             15.0,
             5.249999999999999
         ],
-        "id": "2DSEQ_DTI_EPI_seg_30dir_sat_multi_2_std_PV360_3.6^^^^_1",
+        "id": "2DSEQ_DTI_EPI_seg_30dir_sat_multi_2_std_PV360_3.6_1",
         "imaging_frequency": 400.38072797888503,
         "is_single_slice": false,
         "num_slice_packages": 1,
@@ -1795,7 +1795,7 @@
             4.656612876329999e-10
         ]
     },
-    "2DSEQ_PRESS_1H_1_std_PV360_3.6^^^^_1": {
+    "2DSEQ_PRESS_1H_1_std_PV360_3.6_1": {
         "TE": 0,
         "date": "2024-07-25 09:02:12.259000+02:00",
         "dim_type": [
@@ -1804,7 +1804,7 @@
         ],
         "dwell_s": 6.25e-07,
         "encoded_dim": 1,
-        "id": "2DSEQ_PRESS_1H_1_std_PV360_3.6^^^^_1",
+        "id": "2DSEQ_PRESS_1H_1_std_PV360_3.6_1",
         "imaging_frequency": 400.3807277403667,
         "is_single_slice": false,
         "num_slice_packages": 1,
@@ -1834,7 +1834,7 @@
             8.380509974458529e-06
         ]
     },
-    "2DSEQ_T1_FLASH_1_std_PV360_3.6^^^^_1": {
+    "2DSEQ_T1_FLASH_1_std_PV360_3.6_1": {
         "TE": 4,
         "TR": 200,
         "affine": [
@@ -1876,7 +1876,7 @@
             20.0,
             8.999999999999993
         ],
-        "id": "2DSEQ_T1_FLASH_1_std_PV360_3.6^^^^_1",
+        "id": "2DSEQ_T1_FLASH_1_std_PV360_3.6_1",
         "imaging_frequency": 400.3807239646813,
         "is_single_slice": false,
         "num_slice_packages": 1,
@@ -1933,7 +1933,7 @@
             1.0110652119312826
         ]
     },
-    "2DSEQ_T1_FLASH_3D_iso_1_std_PV360_3.6^^^^_1": {
+    "2DSEQ_T1_FLASH_3D_iso_1_std_PV360_3.6_1": {
         "TE": 8,
         "TR": 50,
         "affine": [
@@ -1976,7 +1976,7 @@
             20,
             12
         ],
-        "id": "2DSEQ_T1_FLASH_3D_iso_1_std_PV360_3.6^^^^_1",
+        "id": "2DSEQ_T1_FLASH_3D_iso_1_std_PV360_3.6_1",
         "imaging_frequency": 400.3807239646813,
         "is_single_slice": false,
         "num_slice_packages": 1,
@@ -2020,7 +2020,7 @@
             0.2549454820972602
         ]
     },
-    "2DSEQ_T1_RARE_1_std_PV360_3.6^^^^_1": {
+    "2DSEQ_T1_RARE_1_std_PV360_3.6_1": {
         "TE": 7.5,
         "TR": 800,
         "affine": [
@@ -2062,7 +2062,7 @@
             20.0,
             9.0
         ],
-        "id": "2DSEQ_T1_RARE_1_std_PV360_3.6^^^^_1",
+        "id": "2DSEQ_T1_RARE_1_std_PV360_3.6_1",
         "imaging_frequency": 400.3807239646813,
         "is_single_slice": false,
         "num_slice_packages": 1,
@@ -2119,7 +2119,7 @@
             3.3552416637796436
         ]
     },
-    "2DSEQ_T2_TurboRARE_1_std_PV360_3.6^^^^_1": {
+    "2DSEQ_T2_TurboRARE_1_std_PV360_3.6_1": {
         "TE": 33,
         "TR": 2500,
         "affine": [
@@ -2161,7 +2161,7 @@
             20.0,
             8.999999999999993
         ],
-        "id": "2DSEQ_T2_TurboRARE_1_std_PV360_3.6^^^^_1",
+        "id": "2DSEQ_T2_TurboRARE_1_std_PV360_3.6_1",
         "imaging_frequency": 400.3807239646813,
         "is_single_slice": false,
         "num_slice_packages": 1,
@@ -2218,7 +2218,7 @@
             3.7060712879070272
         ]
     },
-    "2DSEQ_T2map_MSME_1_std_PV360_3.6^^^^_1": {
+    "2DSEQ_T2map_MSME_1_std_PV360_3.6_1": {
         "TE": [
             8,
             16,
@@ -2273,7 +2273,7 @@
             20.0,
             6.500000000000002
         ],
-        "id": "2DSEQ_T2map_MSME_1_std_PV360_3.6^^^^_1",
+        "id": "2DSEQ_T2map_MSME_1_std_PV360_3.6_1",
         "imaging_frequency": 400.3807239646813,
         "is_single_slice": false,
         "num_slice_packages": 1,
@@ -2424,7 +2424,7 @@
             9.175818853906016
         ]
     },
-    "2DSEQ_T2map_MSME_2_std_PV360_3.6^^^^_1": {
+    "2DSEQ_T2map_MSME_2_std_PV360_3.6_1": {
         "TE": 8,
         "TR": 2200,
         "affine": [
@@ -2467,7 +2467,7 @@
             20.0,
             6.500000000000002
         ],
-        "id": "2DSEQ_T2map_MSME_2_std_PV360_3.6^^^^_1",
+        "id": "2DSEQ_T2map_MSME_2_std_PV360_3.6_1",
         "imaging_frequency": 400.3807239646813,
         "is_single_slice": false,
         "num_slice_packages": 1,
@@ -2568,7 +2568,7 @@
             1
         ]
     },
-    "2DSEQ_T2star_FID_EPI_1_std_PV360_3.6^^^^_1": {
+    "2DSEQ_T2star_FID_EPI_1_std_PV360_3.6_1": {
         "TE": 24.5,
         "TR": 2000,
         "affine": [
@@ -2610,7 +2610,7 @@
             20.0,
             6.25
         ],
-        "id": "2DSEQ_T2star_FID_EPI_1_std_PV360_3.6^^^^_1",
+        "id": "2DSEQ_T2star_FID_EPI_1_std_PV360_3.6_1",
         "imaging_frequency": 400.38072797888503,
         "is_single_slice": false,
         "num_slice_packages": 1,
@@ -2659,7 +2659,7 @@
             44.029659425184775
         ]
     },
-    "2DSEQ_T2star_map_MGE_1_std_PV360_3.6^^^^_1": {
+    "2DSEQ_T2star_map_MGE_1_std_PV360_3.6_1": {
         "TE": [
             4.5,
             10.0,
@@ -2711,7 +2711,7 @@
             20,
             1
         ],
-        "id": "2DSEQ_T2star_map_MGE_1_std_PV360_3.6^^^^_1",
+        "id": "2DSEQ_T2star_map_MGE_1_std_PV360_3.6_1",
         "imaging_frequency": 400.38072797888503,
         "is_single_slice": true,
         "num_slice_packages": 1,
@@ -2768,7 +2768,7 @@
             3.4421158749619405
         ]
     },
-    "2DSEQ_T2star_map_MGE_2_std_PV360_3.6^^^^_1": {
+    "2DSEQ_T2star_map_MGE_2_std_PV360_3.6_1": {
         "TE": [
             4.5,
             4.5,
@@ -2825,7 +2825,7 @@
             20,
             1
         ],
-        "id": "2DSEQ_T2star_map_MGE_2_std_PV360_3.6^^^^_1",
+        "id": "2DSEQ_T2star_map_MGE_2_std_PV360_3.6_1",
         "imaging_frequency": 400.38072797888503,
         "is_single_slice": true,
         "num_slice_packages": 1,
@@ -2878,7 +2878,7 @@
             1
         ]
     },
-    "2DSEQ_T2star_map_MGE_mod_all_1_std_PV360_3.6^^^^_3": {
+    "2DSEQ_T2star_map_MGE_mod_all_1_std_PV360_3.6_3": {
         "TE": [
             3.5,
             8.5,
@@ -2930,7 +2930,7 @@
             20.0,
             0.8
         ],
-        "id": "2DSEQ_T2star_map_MGE_mod_all_1_std_PV360_3.6^^^^_3",
+        "id": "2DSEQ_T2star_map_MGE_mod_all_1_std_PV360_3.6_3",
         "imaging_frequency": 400.3322244201979,
         "is_single_slice": true,
         "num_slice_packages": 1,
@@ -2987,7 +2987,7 @@
             0.9648777393544125
         ]
     },
-    "2DSEQ_T2star_map_MGE_mod_all_2_std_PV360_3.6^^^^_3": {
+    "2DSEQ_T2star_map_MGE_mod_all_2_std_PV360_3.6_3": {
         "TE": [
             3.5,
             3.5,
@@ -3044,7 +3044,7 @@
             20.0,
             0.8
         ],
-        "id": "2DSEQ_T2star_map_MGE_mod_all_2_std_PV360_3.6^^^^_3",
+        "id": "2DSEQ_T2star_map_MGE_mod_all_2_std_PV360_3.6_3",
         "imaging_frequency": 400.3322244201979,
         "is_single_slice": true,
         "num_slice_packages": 1,
@@ -3097,7 +3097,7 @@
             1
         ]
     },
-    "2DSEQ_T2star_map_MGE_mod_pos_1_std_PV360_3.6^^^^_3": {
+    "2DSEQ_T2star_map_MGE_mod_pos_1_std_PV360_3.6_3": {
         "TE": [
             3.5,
             8.5,
@@ -3149,7 +3149,7 @@
             20.0,
             0.8
         ],
-        "id": "2DSEQ_T2star_map_MGE_mod_pos_1_std_PV360_3.6^^^^_3",
+        "id": "2DSEQ_T2star_map_MGE_mod_pos_1_std_PV360_3.6_3",
         "imaging_frequency": 400.3322244201979,
         "is_single_slice": true,
         "num_slice_packages": 1,
@@ -3206,7 +3206,7 @@
             0.9597664168090889
         ]
     },
-    "2DSEQ_T2star_map_MGE_mod_pos_2_std_PV360_3.6^^^^_3": {
+    "2DSEQ_T2star_map_MGE_mod_pos_2_std_PV360_3.6_3": {
         "TE": [
             3.5,
             3.5,
@@ -3263,7 +3263,7 @@
             20.0,
             0.8
         ],
-        "id": "2DSEQ_T2star_map_MGE_mod_pos_2_std_PV360_3.6^^^^_3",
+        "id": "2DSEQ_T2star_map_MGE_mod_pos_2_std_PV360_3.6_3",
         "imaging_frequency": 400.3322244201979,
         "is_single_slice": true,
         "num_slice_packages": 1,
@@ -3316,7 +3316,7 @@
             1
         ]
     },
-    "2DSEQ_UTE3D_1_std_PV360_3.6^^^^_1": {
+    "2DSEQ_UTE3D_1_std_PV360_3.6_1": {
         "TE": 0.006883333333333333,
         "TR": 2.3,
         "affine": [
@@ -3359,7 +3359,7 @@
             25,
             25
         ],
-        "id": "2DSEQ_UTE3D_1_std_PV360_3.6^^^^_1",
+        "id": "2DSEQ_UTE3D_1_std_PV360_3.6_1",
         "imaging_frequency": 400.38072797888503,
         "is_single_slice": false,
         "num_slice_packages": 1,
diff --git a/test/synthetic.py b/test/synthetic.py
index 3046e28..b852aa2 100644
--- a/test/synthetic.py
+++ b/test/synthetic.py
@@ -153,6 +153,7 @@ def visu_pars_records(
         "VisuCoreByteOrder": "littleEndian",
         "VisuSubjectPosition": subject_position,
         "VisuSubjectName": ["<synthetic>"],
+        "VisuSubjectId": ["<phantom>"],
         "VisuStudyNumber": 1,
     }
 
diff --git a/test/test_api.py b/test/test_api.py
index 4d52c4e..dd4cd76 100644
--- a/test/test_api.py
+++ b/test/test_api.py
@@ -15,7 +15,7 @@
 from brukerapi.exceptions import UnsupportedDatasetType
 from brukerapi.folders import Folder
 from brukerapi.splitters import SlicePackageSplitter
-from test.synthetic import stacked_positions, write_2dseq, write_jcampdx
+from test.synthetic import Verbatim, stacked_positions, write_2dseq, write_fid, write_jcampdx
 
 
 def study(tmp_path, **kwargs):
@@ -70,7 +70,7 @@ def test_metadata_groups_follow_the_specification(tmp_path):
 
 
 def test_metadata_reports_the_same_string_as_the_property_that_reads_it(tmp_path):
-    """`subj_id` and `metadata` read VisuSubjectName; they must agree.
+    """`subj_id` and `metadata` read VisuSubjectId; they must agree.
 
     `subj_id` stripped the `<...>` delimiters in its recipe, `metadata` -- the
     newer surface -- did not, so the two APIs reported different values for one
@@ -78,8 +78,58 @@ def test_metadata_reports_the_same_string_as_the_property_that_reads_it(tmp_path
     """
     dataset = Dataset(study(tmp_path), load=LOAD_STAGES["properties"])
 
+    assert dataset.metadata["visu_subject"]["id"] == "phantom"
+    assert dataset.subj_id == dataset.metadata["visu_subject"]["id"]
+
+
+def test_subj_id_is_the_subject_identifier_not_the_subject_name(tmp_path):
+    """A 2dseq read VisuSubjectName while fid/rawdata/traj read SUBJECT_id (#216).
+
+    ParaVision keeps the two apart -- VisuSubjectName is the DICOM patient
+    name, `family^given^middle^prefix^suffix` on PV360 -- and VisuSubjectId is
+    the Visu copy of SUBJECT_id. `subj_id`, and the `id` built from it, must
+    mean the same thing for every dataset type.
+    """
+    dataset = Dataset(study(tmp_path), add_parameters=["subject"], load=LOAD_STAGES["properties"])
+
     assert dataset.metadata["visu_subject"]["name"] == "synthetic"
-    assert dataset.subj_id == dataset.metadata["visu_subject"]["name"]
+    assert dataset.subj_id == dataset["SUBJECT_id"].value == "phantom"
+    assert dataset.id == "2DSEQ_8_1_phantom_1"
+
+
+def test_study_id_is_the_study_identifier_and_study_nr_the_number(tmp_path):
+    """`study_id` read the study *number* for every dataset type (#216).
+
+    ParaVision's study identifier is a different parameter -- VisuStudyId /
+    SUBJECT_study_name, the user-given string set at study registration -- and
+    the number is VisuStudyNumber / SUBJECT_study_nr. `id` keeps using the
+    number, which is what makes it unique within a subject.
+    """
+    root = tmp_path / "20200612_094625_study_1_1"
+    write_jcampdx(root / "subject", {"SUBJECT_id": ["<phantom>"], "SUBJECT_study_nr": 1, "SUBJECT_study_name": ["<TEST_IO>"]})
+    image = Dataset(write_2dseq(root / "8" / "pdata" / "1", extra={"VisuStudyId": ["<TEST_IO>"]}), add_parameters=["subject"], load=LOAD_STAGES["properties"])
+    acqp = {
+        "ACQ_sw_version": ["<PV 6.0.1>"],
+        "GO_raw_data_format": "GO_32BIT_SGN_INT",
+        "GO_block_size": "continuous",
+        "BYTORDA": "little",
+        "ACQ_dim": 2,
+        "ACQ_dim_desc": Verbatim("( 2 )\nSpatial Spatial"),
+        "ACQ_size": np.array([8, 2]),
+        "NI": 1,
+        "NR": 1,
+        "ACQ_phase_factor": 1,
+        "PULPROG": ["<FLASH.ppg>"],
+    }
+    method = {"PVM_EncNReceivers": 1, "PVM_EncMatrix": np.array([4, 2]), "PVM_DigNp": 4}
+    raw = Dataset(write_fid(root / "8", acqp, method), add_parameters=["subject"], load=LOAD_STAGES["properties"])
+
+    for dataset in (image, raw):
+        assert dataset.study_id == "TEST_IO"
+        assert dataset.study_nr == 1
+        assert dataset.subj_id == "phantom"
+    assert image.id == "2DSEQ_8_1_phantom_1"
+    assert raw.id == "FID_8_phantom_1"
 
 
 def test_get_returns_a_default_where_a_property_does_not_resolve(tmp_path):
diff --git a/test/test_property_configs.py b/test/test_property_configs.py
index 84293d3..7a3556a 100644
--- a/test/test_property_configs.py
+++ b/test/test_property_configs.py
@@ -105,8 +105,8 @@ def test_traj_scheme_detection_is_not_version_gated():
 def test_traj_custom_properties_define_a_stable_id():
     traj = _load_config("properties_traj_custom.json")
 
-    assert [*traj] == ["subj_id", "study_id", "exp_id", "id"]
-    assert traj["id"][0]["cmd"] == "'Traj_{}*{}*{}'.format(@exp_id, @subj_id, @study_id)"
+    assert [*traj] == ["subj_id", "study_id", "study_nr", "exp_id", "id"]
+    assert traj["id"][0]["cmd"] == "'Traj_{}*{}*{}'.format(@exp_id, @subj_id, @study_nr)"
 
 
 def test_fid_scheme_config_keeps_exact_matches_before_code_fallback():