I ran into the same trouble... TT online showed a number for MN taxable income that included income from another state, which was confusing. It's not possible to see the forms until you've paid, but this can be done before submitting the return. Turned out that MN works off the federal income numbers to make adjustments, then takes a percentage of the total income tax by multiplying it by the same percentage derived from MN/other state income, rather than using the actual MN income numbers to start with. The simple interface of TurboTax is both a blessing and a curse... better presentation of data and better help documentation would make things easier to understand.
