Vista Media Player Sync Problem

I the following problem in Vista Media Player when syncing with a Moto Q9h:

1) On the phone, the sync'd albums show up properly.
2) When click on my device in Windows Media Player, some of the artists all
appear under a different artists. Intially they appeared fine, but over
time, they all get lumped into a single artist.

FYI, YES, the tags are set correctly for Artist and Album. As I said, the
artists and albums show up fine on the phone and in the library on the PC.
They only show up incorrectly when viewing the phone's library with Media
Player.