Originally Posted by Starson17
It's been asked before, but not often. It would be hard to find by searching.
I'm not sure why you want a single book record. I copy the first book and all its formats/metadata (make a blank book and use the merge-keep others option), then replace the pdf in the new book record and mark that book with a tag or title change. Alternatively, just drag the new pdf over to the main GUI screen, wait for it to ask if you want to keep duplicates, say yes, then merge the metadata/formats from the first book record (with the keep option)
If you really need it in the same book entry, add a zip or rar file with all of your pdfs inside.
Once again, you have a workable solution.
I have found a few reasons to have "versions" of the same document.
"Stripped" of images that don't scale well.
Other, less than optimal
tweaks just for the tiny, small screens
Having to remember
to press "Keep"