A very complex thread. Please allow me to attempt to summarize.

This tread originated over here; https://www.pgmusic.com/forums/ubbthreads.php?ubb=showflat&Number=809584&page=1

The OP (Paul335smith) originally asked if “Has anyone ever been successful in adding 4/4 tracks to a 6/8 recording? If so, please let me know how to do it.” This question was timely for me since I had just started a project specifically to build a song in 6/8 in Reaper. I initially had no intention to use BIAB since I did not feel this would be successful. But Paul’s question caused me to take a turn in my project to add his “ask” to my “learning objectives”.

Paul has gotten a lot of feedback specific to 6/8 work arounds in BIAB which have been historical here in the forum. So I attempted to do exactly what Paul had asked “Has anyone ever been successful in adding 4/4 tracks to a 6/8 recording? If so, please let me know how to do it.” So far I have not been able to do this (see below).

Folks have indicated tempo changes are needed while others have said they are not! But no one could fully answer his question. Until now!

“If you stay in Biab and don't venture out into the real world you should be fine. If you want Biab to gen up tracks to fit with existing DAW time signature tracks, forget it.” Musocity

This is a concise statement and conclusion to what I felt Paul was asking for and I am trying to do. I felt I got close to showing how this can be done, but I hit a wall. I hope I have been clear in explaining where I am stuck in the process and that Peter is on board and looking into a solution or clarification. So perhaps, the jury is still out for me.

But if Musocity is correct in his conclusion, this is a huge opportunity for PGM to remedy this situation. Bring BIAB out of the box and open it up for integration with other music apps which would allow exactly what Paul was asking for to be doable.

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