Migrated Email User = None

[Consultant1027]

All the e-mail accounts I migrated are assigned to no user. When I go to create user, the options are create an email account on the domain and external email address. I'm currently using a bogus external address for login as I was afraid selecting the option to create an account, would delete and re-create the existing e-mail account. Should I just use the create account option and it will use that account without recreating it, or will it error out saying there is an existing account already. If the latter, is there any way to get around this other than having to use some other e-mail address?