Yes, I owed tax in 2020; however, the tax due when I ran the amended return was very large (should have computed a refund). When I looked at the 1040 forms for both the original return and the amended return (with the correction I made) the returns were what I expected. The 1040-x form had changed every line item on the original return from what was filed in apr 2020 but the amended column C was what I expected. It was as though turbotax imported my original incorrectly. I gave up and instead filled out the IRS form that they have on line.
