I think, this is not a "problem" with the rsap-app.
When my phone - Android with rsap or rsap out of the box (Blackberry Leap) - is connected to the car, the call history from the phone is copied to the car.
When I get calls in the car and later disconnect my phones, the call history in my phone is not updated. That is not a problem for known numbers. But I get a lot of calls (and missed calls) from unknown numbers. This numbers are lost after disconnecting from the car.
Is this a rsap-"problem" or a problem from my manufacturer VW - and is there a solution?