I prepare with the last version of BIAB, Fats Waller: Ain't Misbehavin', the version where the tempo changes from 88 to 192 and back to 88.
For a jazz standard and guitar track, I will choose a Freddie Green Real Track among sw060, sw085, sw110, sw140.
At measure where tempo doubles, I hit F5 to do that, but how to switch the realguitar from 085 to 140 ?

Here is what I did: I put sw085 on the guitar track and sw140 on the string track, and when I change tempo I mute one track
and back to normal the other track.

Another little problem, the max limit of sw140 is tempo 160, and I need to reach 192 ...
Here is what I did: when I import the project, midi and real stuff in the sequencer, I used a desser plugin on the
Freddie Green real tracks to attenuate some noises induced by the out of range tempo.

As I used 2 different tracks in BIAB and sequencer, I finish by creating different presets in my sequencer for
the desser plugin like Fred060 if generated by sw060 Fred RealTrack, and so on

Does it exist a better or simpler method ?