That is the build I'm running. I did regenerate the song multiple times. I can't force rebuild only the Soloist track like I can the guitar and bass realtrack, perhaps because it was generated by the Soloist? So don't know if regenerating the song really effects that track. 

I think setting the time base on the Extra Soloist Information dialog is resetting the default time base for the soloist. Changing it stays associated with that realtrack in other places in the program, but doesn't change behavior for this particular generated solo.

There's a bug coming at this same desired result from a different angle that leads me to think their's some "disconnected" functionality when it comes to timebase and soloing/arranging. In this case I followed the below thread and changed soloist track at a bar level to get some end of phrase soloing. But if I switched the track to half-time it didn't honor the "silencing" (not muting) track changes.

(Is there a better way to link to posts?)

https://www.pgmusic.com/forums/ubbthreads.php?ubb=showflat&Main=82582&Number=597659#Post597659

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Chuck Wiggins

BIAB 2023 Win UltraPak, Cakewalk, Windows 10 Pro
Custom AMD Ryzen 7 3700X 8-Core, Focusrite Scarlett 4x4 interface

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