What's eating my Mobile Favorites during sync?!

[mstevens]

I've got a new Sprint Mogul that I'm syncing with Windows Vista Home Premium. I have "Mobile Favorites" checked under Change Content Sync Settings. During synchronization, sometimes all or nearly all of my favorites from the Mogul disappear on both the desktop and the handheld.

This occurs often enough that I regularly copy a backup of the folder on both sides since I have to restore it a couple of times per day. It's pretty annoying, since I really do want to be able to edit, add, and maintain mobile favorites on my desktop.

The behavior is thus far unpredictable and inconsistent. Often I can go several syncs without it happening, then favorites suddenly vaporize. One consistent feature is that only favorites in folders disappear - the 2 that are in the root favorites folder never do. Often, the most recently-used, added, or edited on the Mogul will survive, while the rest disappear. Typically, favorites are safe until I use PIE then are liable to vanish, but sometimes I can use it without this happening.

Does anyone have any ideas what's going on and how I can stop it?