After you file

Your 2018 AGI is nowhere on your 2019 return.   Your 2018 AGI was only required to identify you when *e-filing* a 2019 return which can no longer be e-filed at all so the 2018 AGI is not needed for anything now.   2019 can only be paper filed and mailed.

**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.**