Issue with BookSmart

I opened a book I had published to do some revisions.

I experimented with a new cover look and it removed the text on the book’s spine – going back to the previous cover did not restore the text. It’s only when I reopened the book that I noticed the text was gone…talk about an easy way to screw up your cover. is this a bug?

Hey is it possible to add or update a book once it has been uploaded? I don’t have everything quite ready to get the ISBN nmber but would like to add it later if it’s possible?