I read the explanation of the problem and the details. Then I looked at the uploaded file. The multiple changes in beats / bar along with two separate repeats is an unusual arrangement. Not surprized it would cause a problem with BIAB operation.

I believe, a lot of your problem will go away if you eliminate the repeats within the chorus. This is easily done by entering the chords in linear fashion. Create one chorus for your arrangement and use the number of choruses to repeat all.

Good Luck


BIAB – 2025, Reaper (current), i7-12700F Processor, 32GB DDR4-3200MHz RAM, 1TB WD Black NVMe SSD, 2TB WDC Blue SSD, 1TB WD Blue, 2 TB SK NVMe, 6 TB External, Motu Audio Express 6x6