After you file

@AHammondsLarson - since the IRS is woefully backlogged, assume it will take 9-12 months from the time the amendment was submitted for it to be processed.  This is from the iRS website: 

 

Status of Processing Form 1040-X, Amended Individual Tax Return: As of July 2, 2022, we had 2 million unprocessed Forms 1040-X. We are processing these returns in the order received and are working hard to get through the inventory. The current timeframe can be more than 20 weeks instead of up to 16. Please don't file a second tax return or contact the IRS about the status of your amended return. Taxpayers should continue to check Where's My Amended Return? for the most up to date processing status available.

 

Just have patience....