Does ReFile create a copy of the original filing or does it modify the original?

If you are using TurboTax Online, when you click the ReFile button it will make a copy of your return for you to make your changes on. You'll see both the original and the ReFile versions.

If you are using TurboTax Desktop, you can use File > Save As to save a copy of your return, so the original is left untouched.

That seemed to work. Thanks