[AndyL]

110 songs referencing 11 files.
I assume your 10 original songs use 10 different PDFs. The newly added 100 songs all refer to the same single PDF file.

The "Files" tab of the song editor shows what's happening. Just look at the fields "Files:" and "Page Order:"

So if I understand this correctly, the CSV populates song data fields and aids in the import however, the songs will be imported individually and appear in the Songs tab as individual entries which in my case means I may end up with 10 versions of the same song unless I deselect the ones I don't want...?

As has been mentioned, collections can help with this. The pre done CSV files usually have a collection defined so all the new songs go into one category.

This is why I suggested a new feature to import these songs into something like a setlist. Then have a new tab that listed them.