I just tried adding Real Drums to a midi song- same results- the RealDrums start right at the beginning of their track and are in no way playing in time with the two midi tracks, so, I am going to assume that it is not possible to add Real Tracks to a midi file- it's either all midi or all RealTracks.

None of the recent responses are addressing my request of telling me the steps, which leads me to believe that it can't be done.