Music disappears after split flow

Hello,

I have a large film score (1200 measures) that I started in Finale and imported via xml. The first time I inserted a split flow, I had no problem. Looks great. Upon the second inserted split flow, I lose about 75% of the music after the split. I can’t determine why some music disappears and other music does not, but it is always the same passages affected.

I tried splitting in different places and also inserting a blank measure and splitting after the blank. Same result no matter where I try.

This screen shot shows the piano part before and after the split flow is executed. (Thankfully “undo” is working well.)

I quit the program while ago and when I rebooted the program just now, the split flow problem seems to have resolved itself. Not sure what caused the original problem, but I hope it does not happen again. Sorry for the trouble.