Yes, I still use POP3, because Gmail handles folders, and because I like to be able to locally file mail from multiple accounts in the same folder... and not worry about filing/deleting mail locally filing/deleting it on the server... etc, etc. Anyway, that's not the point. If I go to delete the IMAP account that Mavericks created, in order to replace it with a new POP3 account, it warns that it'll delete all my local mail. That's almost 8 years' worth of archives that I DO NOT want to lose and that would take a week to re-import to Mail.app. Halp?