I upgraded my ispconfig this morning from an admittedly old version and as part of it, now do not see any email in my inbox from before the upgrade. I grepped the files against a subject line that existed before and after the upgrade (new messages this afternoon) and it looks like the new mail is going into /var/vmail/domain.com/user/Maildir/cur now instead of /var/vmail/domain.com/user/cur, so it appears to be a minimal but important change. Based on this, can I just move cur/* into Maildir/cur/* or do I also need to somehow rebuild an index, and if so how would I go about it? I'm relieved that the mail isn't totally gone, but being able to read it would be nice too. I'm not sure if just copying the files will work, or if that will end up breaking things worse.