I have changed the primary HM on the AP at least 8 times over the past few months. One day it will just stop connecting, but I can still Ping and SSH to the AP. I check the HM it is talking to and HMOL is indicated rather than my On Premis device. Once I change the Primary HM and reboot the AP will start talking to the HM again.
Any and all suggestions to make the setting stick would be helpful.