@Oscar Zilch wrote:
.....when I file electronically, does the software know to file as an amended return and does it submit the Form 1040X?
Yes.
Beginning with the 2019 tax year, you can e-file amended tax returns. If you used TurboTax to prepare Form 1040-X, follow the software's instructions to e-file the amendment.
See https://turbotax.intuit.com/tax-tips/amend-return/how-to-file-an-amended-return-with-the-irs/L6kO691...
