I had 1 question and one concern.  When I accessed the eic worksheet to indicate that I wanted to use the 2019 income to get the credit for ty2021, the 2020 income was pre-populated on the line for 2019 income, but you were able to change the amount.  I think it's a little confusing and errors can easily be made.

My question was if we can use the 2019 income a second time to calculate the EIC, if the 2019 income was used to calculate the EIC for ty2020.  Anything I read; just send you can use 2019 income to calculate the credit and did not say that you can only use it once.