Is there now an improvement in this functionality, as it still doesn't seem to work for me. I think that I have yet to import a PDF file from my Google drive (book or article) which is then autoupdated by Paperpile. The only way to get full data is to do a full search for the title on WorldCatAmazon/Google Scholar first, import it using the chrome extension, then manually add the PDF. Although I prefer the web interface and Google connectivity of Paperpile, this is as time-consuming as it was using Endnote.
Am I missing something here? Even if I clear the title/author field and just put in raw DOI/ISBN, the autoupdate feature still never scores a hit.