Could you let me know firmware version for UAP?
If in 200.2 or 200.3 using fixed IP, Plz upgrade 200.4 and use dynamic IP for aps and management interface IP for master mgmt.
Currently when a UAP which had master role is rebooted, the ap is factory reset after reboot.
And config is synced from new master.
If version 200.2 or 200.3, the ap , at that time, I have seen many times that a rebooted ap which had master role don't find new master.
And when the ap is rebooted, if it have no dhcp server, the ap never works.
If version is 200.2 or 200.3, due to above reason, I had seen factory reset many times.