[fitzhugh]

I converted an epub to epub so I could change some things (justification etc.), and entered a new title, expecting it to make another copy and leave the old, as if I had made a new filename, not just new title. It didn't. This makes sense when I think about it, but we are used to dealing with filenames and being able to rename when saving so as to not lose the original. Would it be possible to add a checkbox for "save original" when converting from a format to the same format?

I know I can save to disk first, this is more about the program working differently than some might expect in a way that can't necessarily be easily undone.

A small issue at most.

Thank you for such a fantastic program!