You have to create an account even if you migrated. It needs to use the exact same email address that you used in the migration, which will become your login name. Afterwards, the char you create needs to be named exactly like the migrated char, with the exception of the last name that can be made up freely.
Do a search for \"inappropriate names\" in case your name isn\'t good RP style. In case of migrating chars with non-RP names, ask a GM to change the name once you have created the migrated char.