Retirement tax questions

Thanks again, I know this is snow balling but hopefully a final question.

In 2019 The State of IL altered my line 16 from $426 to $401 due to my confusion around buying and selling our primary home in the same tax year.  In summary, while I don't fully understand what numbers they changed to arrive at this.

 

Question:
In Amending my and State due to the original issue with the 1099-R. 
1)I assume the IL Amended needs to reflect the line 16 $401 change, Correct?
2)How should I go about making that change?  I'm guessing they changed the property tax from $8,513 to $8,020

I greatly appreciate your help.