Thank you for your help and sorry for the late reply.
I've followed your steps but in Form 1040 Line 4B I see $0 and Line 4a I see "11,004".
For Line 4a, I assumme this is a combination of my contribution of $6,000 + my spouse of $5,004 which is $5,000 +$4 earnings. We are filing jointly.
In my spouse's Form 8606 Line 13, Line 16 and Line 17 it is $5,004.
I'm not sure if I entered correctly such that the $4 is recorded somewhere for tax.
