That is weird. I have never had that happen here.

Try a factory reset as that may solve the problem.

If that doesn't work look carefully at your BiaB song, your MIDI file setting, and at your BiaB DAW settings.

In your MIDI file settings look for the MIDI guitar and harmony settings. If both are checked and you have guitar and/or harmony tracks in your song the exported MIDI file will have 6 tracks for every guitar part and 4 tracks for every harmony part. Check your Logic tracks and if they only have one note per track then your given track may have been on an original BiaB guitar track. Again I'm on a PC so this may or may not be on the MAC's version of BiaB.

Let me know how you make out.

PS - for your song to be complete you need to add those other 70 trombone parts grin

Doc-take it easy John this is just a sharp scalpel. It will not cut deep so don't worry.
Me-I'm not John
Doc-I know, I am!

64 bit Win 10 Pro, the latest BiaB/RB, Roland Octa-Capture audio interface, a ton of software/hardware