To avoid that Finale “just changes it back”, go to Preferences - Edit, and de-select Automatic Music Spacing. Now that was some useful information. Here's my solution by force:
HP (Ignore Data)
Plays grace notes before the beat both when checked and unchecked.
Still plays before the beat.
So, conversely, what setting will get Finale (v25.5) to play grace notes *on* the beat?
This ranges from difficult to impossible, all because MakeMusic does not provide an option for the bar line of a measure to be different from all other bar lines, in all other staves, in both the s...
I intend to "bother," no matter what it takes.