The only time signatures from BiaB that will since with any other MIDI or audio tracks(s) are 2/4, 3/4 and 4/4. This has been a thorn in my side for years. Peter has explained all BiaB styles are based on those three time signatures. Other time signatures are for notation only.

If you use any other time signatures like 6/8, 5/4, 12/8, etc the only thing you can do is to play the additional instruments/tracks yourself.

I have been told that RealBand can handle some of those time signatures but I have had little success there. However I rarely use RealBand so that may fall on me.

Whenever I get something stuck in the back of my throat, I dislodge it by drinking a beer.
It's called the Heineken Maneuver.

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