Estimated payment vouches for the NEXT tax year are automatically produced by the TT program when you have a balance due on the current return. So if you had a balance due on the 2020 NJ return you should have have paid the balance due with the amended return. The estimated payment forms were to be used to make sure this didn't happen again on the 2021 return and were optional to use not mandatory. Any payments you made using those vouchers were applied to the 2021 return that you are preparing now and they should be entered as such on the 2021 return.
