I have a load of these in my drive from Mendeley import and they add up across my files.
It seems to be that if you delete from Google Drive directly on the desktop (by targeting all those with brackets after their name) then they just get added back, which I assume is Paperpile. So you have to ‘remove’ them from Paperpile.
It would be useful to have a ‘has multiple PDFs’ filter - there is already a ‘has no pdf’ and ‘has pdf’ so could be extended to flag those with more than one.
I am finding two cases: (1) multiple files because these were imported as duplicates; or (2) multiples files were all the chapters from a book have been associated with the same reference.
Having a ‘has multiple pdfs’ filter would help me narrow this down and correct for either case.
The latter case is more difficult as you can’t extract a PDF from one reference into a new reference so I’ll need to create new references and then upload the file and remove the original.