I'm having this same issue with the state of MN. Form M1 automatically adds back the 10,200 of exempt unemployment from the federal form. I am then allowed to do a subtraction of the railroad unemployment amount on M1M. However form M1W reporting taxes withheld is requiring the 1099 amount of income to be entered to get the subtraction. I tried to enter and note $0 MN withheld, but it is requiring a MN Tax ID which the 1099 form does not note. It is not allowing me to continue with my e-file due to no MN Tax ID for the railroad unemployment benefit.
