CM 23.4.1 Hotfix 3 - Error with old CM 9.4.4. registration form popping when registering document

CM 23.4.1 Hotfix 3 - Error with old CM 9.4.4. registration form popping when registering document

Hi all, well, we recently had an upgrade from CM 9.4.4 to CM 23.4.1 Hotfix 3 . All went well except some users KW type are having "old" CM 9.4.4." document registration form instead of CM registration form. What could be causing this? They tried reinstalling CM, giving user Admin rights etc, nothing worked

 Also some error pops up : "Root Element is missing Error"

Incorrect Registration Box and Root Element is missing Error

Anyone had similar issue and how it was resolved if yes? Thanks