Wow, I didn't know that was doable, and the ZD won't try to upgrade the firmware on the standalone AP's? What's the range of backwards compatibility for this? 22.214.171.124.432 seems a lot like 9.12.1 MR refresh — if ZD1100 can manage it, it seems to breathe some new life into it for managing AC AP's.
Yes, a ZD will re-flash any Standalone AP to whatever version the ZD is running (ie 126.96.36.199.14). But..., APs being used as Standalone, ie. not on the same VLAN/subnet or at the same location, can run the 188.8.131.52.432 (similar to ZD 9.12.1 MR) features and bug fixes.