I've written a rather long piece which mixes unmetered chant and metered choral pieces, about 50 pages long.

I've discovered when I use my custom half bar line in chant sections, at some point later all my half bar lines disappear in the entire piece. When I created it, it was no. 79 in the custom list. After they disappear they all appear to be reset to option no. 1 in the custom list, except that the no. 1 custom bar line doesn't appear in its place either. So I can't move my half bar line to the no. 1 position and have that fix the problem.

I'm not sure what triggers the bar lines to disappear. On another forum someone thought I might have made a change using "Edit Measure Attributes," at some point after setting the bar lines, which might have been the trigger. I am not sure that that is the cause, but I guess it might be.

It has created a TON of extra work for me to go back in a replace those bar lines throughout the work. Clearly there's a bug somewhere.

Windows 10, Finale 26.3.1.520