GoDaddy Mail Migration Accounts

I was setting up MFA on my O365 email thru GoDaddy and I see 2 accounts that are not mine.

mailto:Email address removed

mailto:Email address removed

I want to make sure these are for the migration from GoDaddy to O365, and can I enable 2 factor?  Or can I delete them now that the migration is complete?

I ask because this email was hacked and that's why I was enabling MFA on the account.

-M