You can also use this method for getting chords from the Biab Plugin into Cubase or Studio One, ReaTrak for Reaper has a button to get chords from the plugin. Will try and make a script for Cubase to get the chords from the plugin.
Cubase
Save a copy of the RealBand session to SGU to open in Biab
Watch https://www.dropbox.com/s/qmrih0pu325pobs/Biab-Chords-to-Cubase.mp4?dl=0
download https://www.dropbox.com/s/qmrih0pu325pobs/Biab-Chords-to-Cubase.mp4?dl=1

Reaper
Watch https://www.dropbox.com/s/ugjp1wgfcz3t5mb/RealBand-to-Reaper.mp4?dl=0
Download https://www.dropbox.com/s/ugjp1wgfcz3t5mb/RealBand-to-Reaper.mp4?dl=1

Studio One
Save a copy of the RealBand session to SGU to open in Biab
Watch https://www.dropbox.com/s/myxsq2v6y680e3i/RealBand-Using-Biab-Chords-to-Studio-One.mp4?dl=0
Download https://www.dropbox.com/s/myxsq2v6y680e3i/RealBand-Using-Biab-Chords-to-Studio-One.mp4?dl=1

Here's the Mac Output chords to midi:

I viewed all three videos. This is an extraordinary effort on your part Pipeline. Thank you for your time, energy and dedication for figuring this stuff out, making helper tools that make information transfer easier between programs and in putting this presentation together

As a Cakewalk by BandLab (CbB) user I was most interested to see how each of the three DAWs (Cubase, Studio One & Reaper) handle the importation of chord chart data. It looks most easy with Cubase, almost as easy with Studio One and easy, but least easy of the three DAWs, with Reaper. Both Cubase and Studio One appear to have dedicated track types that display chords along the timeline.

Thanks Pipeline!

Reaper doesn't have a dedicated chord track hence ReaTrak, it uses Regions, (hopefully Reaper 6 will have a chord track) but actually Reaper will do it better as it can get the chords from, a midi item, BB Chord Output midi track, Biab RB PT musicxml export, midi markers, midi lyrics, cues and it will also get the plugin chords.
I'm just looking into scripting in Cubase and Studio One to get the plugin chords from the plugin's Song.txt in the bb folder.
(Chord=bar,beat,name)

Chord=1,1,Am
Chord=2,1,Dm
Chord=3,1,Em
Chord=4,1,Am
Chord=4,3,G
Chord=5,1,F
Chord=6,1,Em

there's also the part markers that Reaper gets
(PartMarker=bar,A=1 B=2)

PartMarker=1,1
PartMarker=9,2
PartMarker=17,1
PartMarker=25,2
PartMarker=33,1

To get them into bandLab you need chord midi markers, that I have been asking for in BB RB since 1834
You can open the musicxml from Biab RB PT in Reaper get the chords then save the track as MIDI with markers, then open that midi in BandLab.

Here's Studio One Chords from Biab Plugin
and
Biab Plugin Chords to Reaper