11-13-2011, 07:36 PM
'Been awhile since I encountered that scenario, but as I recall it gives an error and simply won't migrate an account when the account has the same username as one already on the Mac.
Did you want to keep the contents of the obsolete Home folder? If so then one option for you is to create an additional admin account, log in under that account and use it to delete the redundant account from the Accounts (or Users & Groups) preferences. When you do so, you have the option to save the Home folder for that user. Do so and then move that Home folder out of the Users folder.
Then when you migrate the other account there's no chance of screwing it up.
(This assumes that you've got enough space on your hard drive for both the obsolete Home folder and the new one.)
Did you want to keep the contents of the obsolete Home folder? If so then one option for you is to create an additional admin account, log in under that account and use it to delete the redundant account from the Accounts (or Users & Groups) preferences. When you do so, you have the option to save the Home folder for that user. Do so and then move that Home folder out of the Users folder.
Then when you migrate the other account there's no chance of screwing it up.
(This assumes that you've got enough space on your hard drive for both the obsolete Home folder and the new one.)