Could use some help with this problem:

I am trying to add a few additional bars to a RealBand piano part that starts in the middle of a tune. Specifically, I am attempting to add two additional bars of piano just before the chorus of the tune. When I highlight the two bar area and choose "generate real track", the two bars generate, but everything on the track after the two bars gets erased.

What am I doing wrong, or is this a bug? Why doesn't RealBand just generate within the two bars that are highlighted and leave everything else in tact?

Thanks!