we have the problem that sometimes moved, changed or deleted appointments in GroupWise are not synchronized to iOS.
The appointment shows up in groupwise correctly after the change, but on the iOS Devices they still remain unchanged.

If I still try to readjust this problem with my own account it works fine.

Mostly this happens, if someone other than the owner creates the appointment with proxy access to the user, and changes this appointment after a while.

I looked in GMS to the user, but there are no unsynchronized appointments. Can't see any errors.

GW 2012 SP1, GMS 2.0.1.

Any ideas where I can search ?

D. O.