This should work on Mac:
New GUI script Set-SGU-MGU-single-frozen-track-or-section-to-import-to-selected-track-GUI.zip
This allows you to set the current SGU you are working on in Biab and instantly import any frozen track or section, so each time I generate a new bit or freeze a different track I Cmd+ S Biab first then click the Import SGU in Reaper:

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If I generate different solo sections in Biab I can instantly transfer them to a new track in Reaper using Open SGU in Reaper .
If I select all the items then > Action: "Tracks: Implode selected items across tracks to one fixed lane track"
then set to comping. Because the riff aren't consolidated wav files you have so much more control and creativity.
This makes video editing so easy, and you can also edit Video RealTracks.

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https://stash.reaper.fm/u/ReaTrak (Scripts for Biab Reaper)
Open SGU in Reaper Instantly