No idea why you are encountering all those issues - something strange is going on. I'll have to try testing with various library backups to see if I can encounter what you are talking about. It seems to work reliably with all of the tests I've run so far. As far as adding a file on the files tab - that is very different. Doing that will just add a second file to the song which is managed independently from the first file. Adding a file in the page order UI will modify the original file and append new pages to it using the selected file as the source for those pages. This also lets you insert a chord pro file into the end of a PDF, for example (you can't have a PDF and chord pro file in the song editor at the same time).
"Save as New Song" saves a new version of the PDF and creates a song using that PDF. It's different from creating a snippet which shares the original file.
Mike
"Save as New Song" saves a new version of the PDF and creates a song using that PDF. It's different from creating a snippet which shares the original file.
Mike