Don’t know if you have seen this thread which suggests a couple of ideas. Identify all annotated papers? - #6 by heumed
I’ve modified my workflow to give each paper its own page in Roam now. I usually have a line about it on the Daily Notes Page (something like 'Found #@Author2021 and a 1 sentence summary /relevant tags) and then create a new page for the paper itself with the metadata, the annotations from PaperPile, and any of my notes or thoughts.
I’d be interested to hear how anybody else is doing this.