I usually export or move references from my master bibtex file to separate ones, for example, when I’m preparing a bibtex file for a conference paper. In case of conference papers, I usually drop all non-required fields to have a clean and condensed reference list. At the moment I do this manually, which is really annoying 
Therefore, it would be very nice if there is an automated action to do this.
Hi,
there are some ways to do this in an automated way:
Cleanup actions: You could manually define clear actions for all non requuir files
And convert to bibtex format (useful if you use biblatex)
Sub Library from aux file. Will generate a library from your aux file, so only containing cited references
Hey, thanks for the reply and the hints. But unfortunately that would mean that I have to setup those actions for all entry types by myself. And actually I assumed that JabRef is already aware of the mandatory and optional fields for the known entry types, as the “Tame the Beast” doc shows (see http://texdoc.net/texmf-dist/doc/bibtex/tamethebeast/ttb_en.pdf, page 14ff).
Thanks for your opinion,
Michael