'Save PDF to Devonthink' locks PDF

I seem to be having a problem when saving a PDF to Devonthink from the Print dialog box. It seems to be remembering security options that I selected for a couple of files I was emailing (the files were saved to PDF—to the Desktop—from the Print dialog box in Devonthink). Now every PDF I save to Devonthink from the Print dialog box is locked.

I have tried trashing the main Devonthink .plist file (from ~/Library/Preferences), but to no avail. I am not sure if the problem resides in Preview, or somewhere else entirely.

Has anyone else had this problem?

Thanks in advance…

By “locked” do you mean the file is set to read-only in the filesystem, or is set to undeleteable in DEVONthink?