[Resolved] Entries visible to wrong clients

Hi All,
i recently migrated my server to a new instance (db Table export/import except for clients, cause i was not quite sure, if and how this is going to work, so i created them manually and reimported the other tables, like domains, etc.) - Used the resync function to recreate everything, and overtook all the data. A bit manual adjustement, until everything was set and worked as before.
As far as i can see, it worked perfectly, but today i realized, clients are able to see domains (or lets say 'entries', cause it happens to everything) of ispconfig.
I guess now i missed a table, which has this client can view/edit this entry data in it. Could somebody tell me, where this is stored? I really need to fix this, but was not sure, where it is located.
Thank you in advance.
System: Ubuntu 16.04 / ISPconfig 3.1.8p1

EDIT 1: Ok i got it - Its not a table which is missing, these sysuser_id / sysgroup_id are pointing to the wrong sys_user.userid now..
I guess, to fix this, i need to change the userId or every entry manually to the now correct userid, because changing the userid could affect currently correct set values (new ones).

EDIT 2: Due to the changed userid, it is not possible, to map them back safely. But i created them in the correct order, just the system users are destroying the id order. If i update the sysuser_id according to the sysgroup_id, it is safe, because they all are the same as on the old system. I will update once i tried this.

EDIT 3: Update worked perfectly. Just one question, wouldnt it be much safer for any changes to the db, to have createdAt & lastUpdatedAt fields for every entry? Exactly for this case could a rollback be possible, if the groups would not match the old ones.