Thank you. Putting both of us as non-residence of Michigan zeroed out Line 18. That appears to have been the problem (though it only changed the amount of overpayment by negative $12). But what is of concern is my Federal and Colorado showing that I am full year resident of Michigan and my wife is full year resident of Colorado. According to TT and Michigan instructions, I have to submit my Federal and Colorado returns with my Michigan's (had to do an amendment to change filing status). Won't that be a red flag to Michigan suspecting that I'm cheating or at least making an error regarding residency on my Michigan return?
