I recently took over a new master/slave 7210 controller setup and am running into an issue after upgrading to 6.4.3.7 from 6.4.2.8. There were a couple different remote AP groups configured and they were working fine, APs rebooted often and always came back up in the right group. After I upgraded, all remote APs reverted back to the default AP group. I can manually edit the whitelist and/or change their AP group and they'll work for a day, but when I come in the next day they are back in the default AP group.
I've opened a case with TAC but they are not being very helpful at all and it's been over a week now. I wanted to reach out here and see if anyone else has ever experienced a similar issue.
Thanks!