It would be the one assigned in your network policy that gets reverted. I have several custom templates that are associated in the network policy and can confirm on AP230 and AP250 at least when I revert it is the custom templates that get reverted to that has all the good things we require. There was a time that this revert had issues but has been fixed now at least for the AP's that we have. approx 1300+ I have a custom for each AP type and set settings like wifi0/wifi1 radio profiles and supplemental cli like
system power-mode 802.3at
no system led power-saving-mode
interface eth1 mode bridge-access
interface eth1 mac-learning enable
This is what I chose to name the Custom AP230/AP250 templates.
Custom_AP230_ETH1_Bridge-Access
Custom_AP250_SDR_ETH1_Bridge-Access
Hope this helps but I'm not sure about that particular AP.
Thanks,
Shawn