I have been filing my taxes jointly with my wife since 2011. She was on ITIN but received her SSN on 12/29/2017. She had not been working until 2019.
We jointly filed taxes in 2018 with ITIN but have filed in 2019 and 2020 using her SSN only. We unfortunately didnt send a note to IRS for rescinding her ITIN and discovered that error recently. While we write a letter to IRS, is there anything else we will need to do?