I don't see a compatible firmware that supports both 7363s and r510s. The only way I can think of to avoid downtime is to sever the connection from 7363 radios and the 1200 on firmware 9.12 to force them to operate autonomously until I connect a new AP and repair the connection, with newer firmware on the ZD. I'll probably do it with VLANs. Would this work, and if so, for how long will the 7363s continue to operate?