It solved the problem. Thank you for your help.
2013/12/18 sjpt <forums_noreply@adobe.com>
Re: E-book in new version. Digital Edition keep remembering the old
version. created by sjpt <http://forums.adobe.com/people/sjpt> in *Adobe
Digital Editions* - View the full discussion<http://forums.adobe.com/message/5941385#5941385