I get what you mean. But if you do not have earned income, the software for 2020 will tell you there is 1 error, because the EITC was calculated from undocumented sources and it will not let you efile the return. This happens if you have 0, income, but it seems you still can get the credit using the 2019 earned income amount, but as soon as you input 1 as an earned income the error dissppears and you can efile the return, it does not make sense to me.