Schedule K-1

My father-in-law passed away January 2, 2021. However, July 2022, I received a schedule k-1 (estate) that is dated 2021. Do I amend my 2021 tax return to include the schedule k-1 with its deductions on line 11? Do I put the schedule k-1 in my 2022 return?

 

I'm the executor, and I do the family taxes.

 

Thanks for your help.