User Profile Wizard is a standalone executable that can migrate your current user profile to your new user account so that you can keep all your existing data and settings.
User Profile Wizard also allows you to delete or disable an account.
The Wizard makes this easy for anyone to use. Just click on the account you want to import, select the domain (drop-down is available for that), and the account name you'd like to use. Click Next and wait for User Profile Wizard to create the backup. A log file is optional here as well.
Be careful here because once completed, this account will be used after a reboot. We also weren't happy that some items were reset, including photos and our default browser. Other errors that made no sense appeared, including "an app caused a problem with the default app." A few problems should be expected when migrating, but overall, User Profile Wizard works as promised. Just remember, it's built to migrate, not necessarily as a backup app.
A user guide is available as well on the home page.