BiaB 2024 build 1111

I'm not sure how much of this is me and how much is BiaB.

I've set BiaB up with an external software GM2 synth (VirtualMIDISynth) as a substitute for one of my hardware synths. My intent later is to use the hardware synth and no audio from the PC, so I have things set up with no RealDrums and I'm gradually building out repertoire from MGU files.

I'd noticed before and have just seen again, that an MGU from which I'm adapting has sforzando loaded on some tracks. That causes a probably surmountable issue where I hear two instruments playing on the one track. By just taking off the sforzando instruments, I can remove its instrument and leave just the one on the external synth. But ... setting the instrument for the BiaB track is not setting the instrument for the synth. I've tried GM2 and GM patches, but the instrument stubbornly stays as it was.

Looking at the MIDI monitor, I see no program change message sent. Is that expected? Do I have to configure something, and if so what and where?

Possibly more worrying is that whilst testing this, I've also noticed that BiaB appears to not be stopping notes when I press the stop button, so whatever note(s) were last sent be BiaB continue to play. I hit the 'panic' on the synth to stop this.

Is there some advice about how best to handle these, please?

Jazz relative beginner, starting at a much older age than was helpful.
AVL:MXE Linux; Windows 11
BIAB2025 Audiophile, a bunch of other software.
Kawai MP6, Ui24R, Focusrite Saffire Pro40 and Scarletts
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