Thanks for the Template suggestion. I have thought about using them, but I don't use the same sequence very often and find remember the use of templates as hard to remember as copying a previous similar piece and modifying it.
I could send you a parent piece, but actually the problem seems to occur on ALL pieces after I have them open for a while. Some times it is sooner than later. I could open a piece, do a very few modifications and the Piano Roll and Note Velocity will work fine. Other times, I made a few changes and they don't. I have not found a pattern yet. The problem will occur eventually as long as I have Notation running. If I restart it, it goes away for awhile and then come back.
Don't you hate those kinds of problems.
I have attached the most recent file that I have been working with. The problem seems to occur quickly with this one.
10 Exercitium.not