Using the IRS protal for the stimulus has nothing to do with filing your 2019 tax return other than it does place your SSN into the IRS database that it has been used and that will prevent e-filing a 2019 tax return with the same SSN.
You just print and mail your 2019 tax return. You are NOT amending because it has never been filed in the first place.
There is nothing that TurboTax (or any other tax service) can do about that because the IRS controls it's database and the IRS does the rejects. The IRS may or may not be fixing this, but that is not known at this time.
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**
