Valid timestamp in vcard

Server configuration

Operating system: I don't know probably linux because it's a webhost and I'm not the administrator.
Database: MySQL
PHP version: PHP 7.x
ownCloud version: 10.1.1.1
Contacts version: 1.5.5

Hey there,
I try to sync owncloud contacts with a local database but the problem is the rev is not updating on change. Is that right? If yes is there an other oppertunity to check when it's got updated?

~ Tim

[Julian1998]

I dont get the exact problem here. So you already have an existing owncloud contacts database? And installed (or whatever) the contacts app later on? But the app and database are not syncing? In this case you should prob talk to your administrator as there is a occ comand which scans the local database for existing addressbooks/contacts

The exact problem is there is an owncloudserver with the contact-app installed and I'm in charge to sync them to a local database because we want to sync them with another system from us. The problem is that system can change contacts as well, so I have to check which contact is newer and which is older. Local I have a timestamp to check that but from owncloud I need a change-date as well. I thought maybe the REV is a valid change-date, so I can check them by date which is newer, which is older but after I updated a owncloud contact the REV value is still not updated. So if this is right there is (how I see it) no other way to check this.

[Julian1998]

Damn. I see. I honestly never saw this yet.