Parked call ringback drops call if not answered

It was brought to my attention that when a call is parked and the call is not picked up after the ringback timeout the call is ringing back to the person who parked it as one would expect. The problem is that if the parked call that is ringing back to the extension of the person who parked it does not get answered the call is being dropped. Is there a way to have the call not be dropped?