I keep the original names. Problem with metadata is that they can be stripped or you can have the same content with different metadata in it. If you download pa

I keep the original names. Problem with metadata is that they can be stripped or you can have the same content with different metadata in it. If you download paper from publisher site or a copy provided by author, they don't need to be the same. When I was working on my PhD thesis I've tried using tools like Zotero for keeping bibliographical references, and pulling the metadata when I needed citations. I wasn't to satisfied with results. Maybe I was using it in the wrong way.