To add to Karthik's comment; A ZoneDirector controlled network very much relies on the ZoneDirector (ZD) for the Wi-Fi network to correctly function, within itself. The ZD doesn't directly interface with any other network equipment on behalf of the Wi-Fi.
The autonomous functionality is very much for an emergency situation where ZDs are temporarily offline/unavailable.
I would recommend looking at migrating to Ruckus Unleashed or Ruckus Cloud but you will need to check compatibility with your legacy APs.
I hope that helps,