MO Social Security Disability page

Confused by the MISSOURI SOCIAL SECURITY ADJUSTMENT screen.

 

"Enter the amount of disability income that was included in your taxable federal social security.  Each person should have received either social security benefits or SS disability benefits, but not both.  Please make sure you enter correctly what you received."  In prefilled box on top, SOCIAL SECURITY BENEFITS, husband shows amount of SS benefits he received.  Wife prefilled $0.  Then below is SOCIAL SECURITY DISABILITY BENEFITS which we complete.  Husband's SS benefits ARE disability, so assumed we should just input that amount again in his section and leave wife's at $0?  If this is the case, would have assumed the default on top "BENEFITS"   to go to $0.  Or is it that we are just clarifying that the SS income he received was in fact disability?