[xwiki-users] Issue on attachments versioning

Hello, Context : XEM 2.7.1 on Tomcat6.0 + MySQL 5.0 I'm used to restore my xwiki farm SQL backup on a test environment. I have to update the Domain names and then it works fine. But this time, I encounter the following issue : - I can retrieve the different version of an existing attachment (without any problem) - I can add a new version of an attachment (the version number is incremented and I can download it) but ... - When I look at the revision history of the attachment, all the old revisions are now lost and the following lines appear in the xwiki.log 2011-06-14 10:56:04,169 [http://www.lclh.org/bin/viewattachrev/Documentation/WebHome/xwikisanitychec…] [http://www.lclh.org/bin/viewattachrev/Documentation/WebHome/xwikisanitychec…] WARN internal.DefaultVelocityEngine - Deprecated usage of method [com.xpn.xwiki.api.XWiki.parseMessage] in /templates/viewattachrev.vm@4,12 2011-06-14 10:56:04,169 [http://www.lclh.org/bin/viewattachrev/Documentation/WebHome/xwikisanitychec…] [http://www.lclh.org/bin/viewattachrev/Documentation/WebHome/xwikisanitychec…] WARN doc.XWikiAttachment - Failed to load archive for attachment [xwikisanitycheck.sql(a)Documentation.WebHome]. This attachment is broken, please consider re-uploading it. Internal error: Error number 3231 in 3: Exception while loading attachment archive xwikisanitycheck.sql of document Documentation.WebHome Wrapped Exception: Error number 0 in 3: Exception while hibernate execute Wrapped Exception: Exception occurred inside setter of com.xpn.xwiki.doc.XWikiAttachmentArchive.archive 2011-06-14 10:56:04,169 [http://www.lclh.org/bin/viewattachrev/Documentation/WebHome/xwikisanitychec…] [http://www.lclh.org/bin/viewattachrev/Documentation/WebHome/xwikisanitychec…] WARN doc.XWikiAttachment - Cannot retrieve versions of attachment [xwikisanitycheck.sql(a)Documentation.WebHome]: null Hopefully, this doesn't occur on my production environment. Do you have any idea about this issue ? Your help will be really appreciated. Regards, Maxime Sinclair