Thanks for your reply, RolandD!
Somehow I'm glad I came up with something new, somehow I'm sad because this is crucial for my use case and I expected RO CSVI could do something like this. And I did not plan any budget for that
I'm also surprised nobody would have the need for such a functionality, because it seems so "simple" and obvious.
I "just" need to add contact data for persons that eventually move from one department to another (eg. contact categories). Or have name changes due to marriage, or drop out and new one move in, etc. So basically synchronize contacts from an external file on a regular basis. If it where only to import the data once I'd be quicker (and already finished) by putting in all data manually
I have some more pieces of data to be to synchronized after the contacts, and I guess I'll have the same need. So please have a look on this.
Thank you very much!
Chris