I submitted an amendment a few years ago via TurboTax (2020), the IRS informed me they didn't receive all the info I entered. What do I do?

[bahretmcd24]

I can see the full submission if I look at the report for that year, but the IRS isn't able to. Can TurboTax help me fix this?

[DoninGA]

A 2020 amended tax return could only have been mailed by you, it could not have been e-filed.  If you did not mail the amended return or the IRS did not receive your mailed tax return then you will have to mail the return again.

Use a tracking service from the US post office when mailing the amended return so that you will have proof that that the IRS received the amended return.

[fanfare]

Is the IRS asking for forms or schedules that are new or changed due to your amendment?

If you don't attach those, IRS will reject your amendment.

You'll have to submit again.

@bahretmcd24 

[fanfare]

Do not include your old 1040 nor your revised 1040 because the Form 1040-X reflects any changes there and becomes your new tax return.

@bahretmcd24