Charlie, yes, your points A: and B: are absolutely correct.
For point A, you have identified a significant limitation of the program: "Bar Settings F5 does not allow selecting Bar 0".
For point B, well, you have stated the obvious: "Since neither bar 0 and bar 2 are selected, both should play"

However, because F5 works for all bars 1 onwards, and music can be generated in bar 0, I genuinely suggest that F5 should be able to be applied in bar 0 also. After all, it is a valid bar, because the program itself knows it can generate notes in that bar.

Yes, the user can go to the trouble of erasing it in Audio Edit afterwards, but F5 should allow it to be muted in any bar that the song can generate it in.

The proper fix should be that the program allows muting of any bar that it produces music in - Simple. No workarounds required.

It would be a significant improvement if the program just could work within its own guidelines.

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