I had this issue, but I resolved it as follows:
After TT processes the amended 1040 there's a screen of the three sections that shows the TT receipt info.
The middle section is the IRS payment section. Select REVIST and enter the payment date there according to the suggested range. Follow the prompts and file the return.
When I did this before I only entered the payment when TT prompted me to do so after the final review. It seems to me this might be a TT bug because the date is not correctly transferred to the amended form unless it's entered by revisiting the IRS payment section as described above.
@mikemathieson @MarilynG1 @CatinaT1
