I have been syncing my old DX to my Mac Address Book flawlessly for about a year. I even tried out the Charge and the TB. They both synced perfectly as well. My new DX2 syncs great, but when I try to edit a contact on the phone, I get the following message: "Motorola services contact information is not editable on this device". I have tried everything I know and can't seem to get past this obstacle. Any thoughts?