After you file

In this link item #7 says that: Have your spouse create a new return for themselves, if they're also filing this year 

https://ttlc.intuit.com/questions/2895311-how-do-i-switch-from-filing-jointly-to-filing-separately

But you said that the spouse should also make an 1099-X. I'm going to file an Amended return now. I will make the 1099-X, but should my spouse make a1099-X or a new return, not a1099-X?