One workaround.
1) Set just section A so it does not go to section b in middle chorus.
2)then play.
3)Then freeze drum track.
4)then set middle chorus to section b.
5) then play again.

Now the bass will change but the drums will stay the same.


BIAB – 2026, Reaper (current), i7-12700F Processor, 32GB DDR4-3200MHz RAM, Motu Audio Express 6x6 - My SoundCloud.