First, I checked the accounts, and it says "micah" was registered on July 23, and "micah118" was registered on December 5. Do either of those dates make sense?
Second, don't get attached to the public keys. You're never supposed to use them after you register an account, so don't worry if they change. If you're used to bitcoin, this will feel confusing at first - but just remember that your account name is all you need to know.
Third, backups will not work the way you expect them to. You'd think that if you back up your account, and then restore from a backup, that everything will be fine and you won't have anything to worry about. Sadly, restoring from a backup is more trouble than just importing it. So in the future, once we get all this cleared away, avoid importing your backups unless something has gone really wrong.
Ok, now a question:
1. you said you tried to withdraw funds from Bter. Which account did you withdraw to? Did you withdraw to an account name, or to a key?