The TurboTax online editions can only be used for one tax return per account and User ID. You will need to create a new account with a new User ID for another tax return.
When you use online TurboTax software you get one return per fee.
Each return needs its own account and user ID. If you use the same account and user ID for a second return, the second one overwrites the first return and it is lost forever.
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