In Finale 2014.5 I'm having a great deal of trouble with staves added and deleted by Finale, not by me. Last night I saved and closed the score as I wanted it. Today I opened it and found Finale had deleted Trumpet 3 and added a second drum stave. What?? The second drum stave is a clone of the one I wrote but I can't delete it without deleting both. Why is this happening? What can I do about it?