I can confirm this behaviour with gutsy. I am using debian/etch postfix as IMAP server. Moving mails (to another account) sometimes just flags them as deleted. As the mailserver is hosted in a vserver I assume that this might be related to http://bugzilla.gnome.org/show_bug.cgi?id=390740 (Evolution pegs cpu when connected to overloaded imap server).
Maybe the copy operation does not finish in time and just gets lost?
I can confirm this behaviour with gutsy. I am using debian/etch postfix as IMAP server. Moving mails (to another account) sometimes just flags them as deleted. As the mailserver is hosted in a vserver I assume that this might be related to http:// bugzilla. gnome.org/ show_bug. cgi?id= 390740 (Evolution pegs cpu when connected to overloaded imap server).
Maybe the copy operation does not finish in time and just gets lost?