We have some strange issues with syncing appointments on our HTC Desire (Anroid 2.1) devices.
Some appointments are getting synced, others not.
Thereīs is no obvious reason why this happens with some appointments (and with others not)
Re-Initializing the user or the device or both does not help.
Itīs getting better, if we delete and re-add the user account to the datasync connector. But some appointments are still not getting synced.
Appointments created on the device are always synced to groupwise. Vice versa not.

Any ideas ?