Moving email requires that folders be selected for synchronization on the device
Posted by Jodie Grazier on 09 October 2009 10:30 AM

Windows Mobile ActiveSync:

Behavior
Email that has been moved to an alternate folder on the device disappears from the device, however, the change is successful on the server.

Cause
Folders have been selected for synchronization on the server from the NotifyLink Web and folder mirroring has been turned on so that folders appear on the device.
However, folders have not been selected for synchronization on the device.

Solution
Selecting folders on the device is required to make synchronizing multiple folders successful.  This is also a requirement for being able to successfully move email from folder to folder.
On the device, go to the device Inbox and tap Menu > Tools > Manage Folders. Check the folders you wish to synchronize.