How to enter: Enter and complete the 1040 as originally filed. Save. (I usually call the file name1234_amended.19i, but you didn't prepare the original.)

AFTER saving, also do the state. Save.

THEN go to the 1040X and click the box for amending 2019. Then go to state and do the same.

Then go back to the federal and make your changes. See 1040X and it should be filled in. Also state.

Save. You cannot e-file the 1040X since you didn't e-file the original.