Originally Posted by snarkophilus
You can use the Modify ePub
plugin to update just the cover (among a lot of other things) without converting from epub to epub.
Thank you Simon! I'm a bit late though I already did epub to epub but I like your solution better.
Dum question....can I delete the coverted epub, return to the Original epub fix the cover & modify it with the above plugin or will that really mess things up?