Overpayment on Amended MA Form 1

On my 2020 MA Form 1 I had an overpayment which I applied to my 2021 estimated tax. I then amended the return. The amended tax due (line 32) was lower but TurboTax added the overpayment on line 36 so the overpayment became a liability. The Department of Revenue records show the overpayment as an Other amount due for 2020 and no overpayment applied to 2021.

 

Why did I lose the overpayment? How does this make sense?