The Copy To function creates a *copy*. It dates the copy on the day you created it. That's why your losing the date sort. In most deployments mail server migrations are done by mail admins not end-users. I'm pretty sure most end-users don't want to migrate their own mail. Either way what your seeing has nothing to do with Zimbra it's just the way Thunderbird (and many other user-level IMAP clients work). That's why we reccomend imapsync to import your mail. |