You can try this with Reaper if you just work in the main Biab program only and tired of dragging files over all the time.
This is just 1 Reaper script that works on any version of Biab frozen SGU/MGU, no modifications needed.
Import-frozen-SGU-MGU-realtracks-drums.zip

Just simply open a frozen SGU/MGU to instantly import the tracks into Reaper.
If you don't have the peak files already it will have to build them but once you have the reapeaks files it will be instant.
You can use Script: Create reapeaks in folder.lua

Some scripts I made for this ( see stash ):
Change selected realtrack source file type.lua : allows changing the file type to any other Reaper supported file format.
Create stems from selected realdrums stereo track.lua : allow you to create the exact same mutitrack drums from the stereo Drums track.
Change selected realtrack to fx.lua : allows change instrument from direct input to fx keeping the same riffs.
Change selected realtrack to direct input.lua : allows change instrument from fx to direct input keeping the same riffs.
Create reapeaks in folder.lua : batch create all the reapeaks for RealTracks & RealDrums so the tracks load in instantly.
ReaTrak Biab SGU MGU.. to regions ab.lua : import chords to regions.
Set 2 bar count-in.lua : set a 2 bar count-in offset


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This will import new sections: Import single frozen track or section SGU MGU to selected track.lua (included with script above).

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