Editing the RealTrack solos in Reaper with injector give more control.
I was using guitar pro files with Ample Guitars as I can drag the GP midi from Ample directly into RapidComposer keeping the keyswitch articulation notes in the phrases, this allows the phrase to be refitted anywhere keeping all the Ample instrument keyswitches locked to those notes but allow the other notes to refit.
Biab chords can be imported into RapidCompser, you can use RapidComposer as a standalone or a VSTi in Biab.