When I updated my 9700 to the latest OS 6 release I was a little too quick and somehow activated the AT&T wireless sync option (BIS). I did the same on my 9780 with T-Mobile, but that was easily resolved doing a wipe and re-syncing.

When I go under Options> Device> Advanced System Settings> Default Services
I switch the Contact Link (SYNC) to default so I can use my desktop manager to sync. I save the selection but every time i go back the AT&T option is selected.

Any way to delete the AT&T Wireless Sync option?

None of my new contact sync with AT&T Wireless Sync. What gives?

You need BES or Google contact sync