Hello, 

I'm working with Finale 2012 on a Mac Desktop and recently whenever I'm putting in new transcriptions certain lines disappear between the scroll and page view.  Also, When I change notes, or note heads, or delete a measure- it doesn't show up right away... instead it needs me to click on selection tool to even view said changes.

The worst is I do not have an Undo or Redo edit, so sadly this was found out after missing some big chunks of music with that delete problem stated above.

Let me know what is the best way to fix this.  Thank you!

Ralph