diff --git a/forward_engineering/alterScript/alterScriptFromDeltaHelper.js b/forward_engineering/alterScript/alterScriptFromDeltaHelper.js
index 41ae8ad..d189e8c 100644
--- a/forward_engineering/alterScript/alterScriptFromDeltaHelper.js
+++ b/forward_engineering/alterScript/alterScriptFromDeltaHelper.js
@@ -11,6 +11,7 @@ const {
 	getDeleteColumnScriptDtos,
 	getModifyColumnScriptDtos,
 	getModifyCollectionScriptDtos,
+	getModifyCollectionKeysScriptDtos,
 } = require('./alterScriptHelpers/alterEntityHelper');
 const {
 	getDeleteUdtScriptDto,
@@ -111,6 +112,12 @@ const getAlterCollectionsScriptDtos = ({
 		.map(getDeleteCollectionScriptDto(app));
 
 	const modifyCollectionScriptDtos = modifyScriptsData.flatMap(getModifyCollectionScriptDtos({ dbVersion }));
+	const modifyCollectionKeysScriptDtos = modifyScriptsData.flatMap(getModifyCollectionKeysScriptDtos({ dbVersion }));
+
+	const [dropKeyScriptDtos, modifyKeyScriptDtos] = _.partition(
+		modifyCollectionKeysScriptDtos,
+		item => item.scripts[0]?.isDropScript,
+	);
 
 	const addColumnScriptDtos = createScriptsData
 		.filter(item => !item?.compMod?.created)
@@ -130,9 +137,11 @@ const getAlterCollectionsScriptDtos = ({
 		...createCollectionsScriptDtos,
 		...deleteCollectionScriptDtos,
 		...modifyCollectionScriptDtos,
+		...dropKeyScriptDtos,
 		...addColumnScriptDtos,
 		...deleteColumnScriptDtos,
 		...modifyColumnScriptDtos,
+		...modifyKeyScriptDtos,
 	].filter(Boolean);
 };
 
diff --git a/forward_engineering/alterScript/alterScriptHelpers/alterEntityHelper.js b/forward_engineering/alterScript/alterScriptHelpers/alterEntityHelper.js
index c159ddf..a87183b 100644
--- a/forward_engineering/alterScript/alterScriptHelpers/alterEntityHelper.js
+++ b/forward_engineering/alterScript/alterScriptHelpers/alterEntityHelper.js
@@ -88,19 +88,24 @@ const getModifyCollectionScriptDtos =
 	collection => {
 		const modifyCheckConstraintScriptDtos = getModifyCheckConstraintScriptDtos(collection);
 		const modifyCommentScriptDtos = getModifyEntityCommentsScriptDtos(collection);
+		return [...modifyCheckConstraintScriptDtos, ...modifyCommentScriptDtos].filter(Boolean);
+	};
+
+/**
+ * @return {(collection: AlterCollectionDto) => AlterScriptDto[]}
+ * */
+const getModifyCollectionKeysScriptDtos =
+	({ dbVersion }) =>
+	collection => {
 		const modifyPKConstraintDtos = getModifyPkConstraintsScriptDtos(collection);
 		const modifyUniqueKeyConstraintDtos = getModifyUniqueKeyConstraintsScriptDtos({
 			collection,
 			dbVersion,
 		});
 		const modifyIndexesScriptDtos = getModifyIndexesScriptDtos({ collection, dbVersion });
-		return [
-			...modifyCheckConstraintScriptDtos,
-			...modifyCommentScriptDtos,
-			...modifyPKConstraintDtos,
-			...modifyUniqueKeyConstraintDtos,
-			...modifyIndexesScriptDtos,
-		].filter(Boolean);
+		return [...modifyPKConstraintDtos, ...modifyUniqueKeyConstraintDtos, ...modifyIndexesScriptDtos].filter(
+			Boolean,
+		);
 	};
 
 /**
@@ -295,6 +300,7 @@ module.exports = {
 	getAddCollectionScriptDto,
 	getDeleteCollectionScriptDto,
 	getModifyCollectionScriptDtos,
+	getModifyCollectionKeysScriptDtos,
 	getAddColumnScriptDtos,
 	getDeleteColumnScriptDtos,
 	getModifyColumnScriptDtos,