Alt has characters.. Main doesn't...

[Mattius]

Sorry if this is in the wrong spot.. I've managed to get the login info to both my old accounts, I have a main and an alt.. My alt still has the noob characters on it with all their junk and their experience and progress.. My main on the otherhand.. as soon as I login I realize every single character is deleted.. It's a completely blank account now and I know this is the account that had my lvl. 23 IKS warrior Jopac.... Did something happen? If they deleted my main chars for something, why didn't they delete my alts..?