It won't let me change the info I put in. I put zeros in for "2018 tax liability" and "2018 Adjusted Gross Income" and I need to change those amounts but it doesn't let me. It just says that I don't owe the penalty based on what I entered. So I'm trying to start the Underpayment Penalties section from scratch, but deleting form 2210 doesn't reset it. I'm wondering if there are any other forms that may be associated with form 2210 that I should delete as well so that I can start over the Underpayment penalty and enter new amounts.
