How to disable (or, remove) "From email" linking and versions associated with a macOS Apple Mail "Save Attachment…" PDF?

I often "Save Attachment…" of a PDF contained in an email that was received. I don’t know dit the PDF file after saving, so the version and link back to the email was created in the "Save Attachment…" process. Ideally, I would like to disable this feature. Alternately, I would like to know some process which can remove this linking in a scriptable or automated way that is faster than my current work-around to Print… and Save as PDF… each file. Can this metadata be easily removed or a different save attachment action be crafter do avoid the linking of a file to a specific email?