I was about to post your solution in the other thread when I saw this thread. This is just me of course but I've always thought of RB as a DAW, not as another version of Biab. I've always imported midi files first into RB then added audio tracks or generated RT's or Biab midi parts. If you turn your head around a bit and simply think of RB as a DAW first, then this question never comes up because you never think about opening up a Biab song directly in RB. I just don't think like that. RB is a very good DAW, you first open a midi file and everything is there as you discovered, then you can import all the individual audio tracks you need and this is from whatever source, Biab, CD's, your own singing/playing, tracks from other songs etc.

Bob


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