I am interested to know how others manage their drawings as they evolve.
In architecture, you typically identify the iteration of a drawing by a revision reference. You might also use a Drawing Issue Sheet that says which version of what drawing was sent to whom and when.
These days, drawings are often sent as PDFs and not as hard copies. They then tend to get sent by email. So if you maintain a good email archive, it is fairly self-policing. But hunting through reams of emails to find the PDF can be a right pain.
One option would be to copy any newly minted PDF sent out to an archive folder within the job file. It would presumably have to be appropriately and uniquely named. If you don’t want to keep changing file names, you could have each PDF in its own subfolder which might simply be date named. With either of these methods, you could just as well save a copy of the Layout file instead of a PDF.
Or perhaps there’s an even better way someone else here uses?