Your not therefore connecting an unleashed AP to the ZD. All you are doing is flashing an AP with either ZD or Base 100 image and migrating the AP to the ZD.
If the question was "can I migrate an Unleashed AP to a ZD", then off course the answer would be yes as the r500 AP has multi platform support i.e. Unleashed, SZ, SCG, vSCG, ZD and stand alone.