TT did fix 2020 Premier to handle the ED67(e) ruling, but not 2019 or 2018 for amendments. So to amend 2018, I used IRS Forms 1040-X and Schedule 1. I entered my 2018 data and the Excess Deduction on line 36 on Schedule 1. Then it carries right to line 1 column B (net change) on the 1040-X, then calculate your new tax based upon your new line 5 Taxable Income. This is for 2018, 2019 might be slightly different as they change Forms and line numbers between tax years.
This is following the IRS Ruling 113295-18 text on this issue.
