No.
All you need to do is drag the wheel model in the hierachy list from the Silvia's FRwheel dummy to the AE86's FRwheel dummy. Scale, reshape and position the wheel to fit the car, then move the pivot of the wheel model into the same spot as the dummy. DO NOT delete any dummies from the AE86. Once the wheel model is in the right dummy you can delete the whole Silvia model from the hierachy.