Seems that most of the main loops in BB are only 1 bar long, rather boring! If I replace the main loop midi file with say a 4 or 8 bar pattern, will triggering a transition to another loop happen at the end of the current bar or wait until the end of the pattern?
Transitions will trigger based on cue fill settings. Choices are immediate, next beat, or end of bar, IIRC. There is no “end of current loop” setting,
^^^ What he said. I have a bunch of Groove Monkey beats which have a lot of multiple bar beats in them, and for me I always transition at the end of the bar, and it does it correctly regardless of where the BB is in the 4 or 8 bar progression.