Calculating capital gains carryover loss

[SueJohnson]

In following the prompts in Turbo Tax to calculate my  capital gains carryover, I need to enter my income from the 1040 from 2018.  However, I amended the return several times.  Do I use the income from the latest one even though I filed it in 2020?

[Critter]

The figures from the LAST filed amended return column C are used in column A of the new 1040X. 

[SueJohnson]

Perhaps I wasn't clear.  I filed the last 1040X for 2018 in 2020, and I am now working on my 2019 return not a 1040X.