Don't do the amendment. Select ''Add a State'' instead. The instructions in the link below are for switching to E-filing. But you can use those same instructions to unlock your already filed-by-mail (as long as you have NOT mailed it) return. You will need to go through the filing steps again after you make your changes and you can still opt to E-file if you want to. If you can e-file, you should e-file.
And if you started an amendment, be sure to cancel it BEFORE adding the state to unlock the return.
How do I change from mail to e-file in TurboTax Online?
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