Keywords in PDFs

I’d like to use Scrivener to organize some PDFs for a research project. Two things. One: some of the PDFs already have keywords associated with them (visible in Adobe Acrobat), but they are not visible in Scrivener. Two: if I create keywords in Scrivener, they are not exported with the document (they seem to be a separate metadata txt file. I’d like to move back and forth in various programs, always having the keywords attached to the original PDF.

I don’t think that there is a way to do that. The keyword systems for each application are very different, You may be better off linking to the PDFs rather than importing them into Scrivener, so you can easily flick back to Acrobat and have access to the keywords.