Yeah...always an annoying detail/deviation from the general norms.
MO is one of a couple states where part-year residents either file as full-year non residents, or as full-year residents (but taking a credit for taxes paid to the other state). In your situation, I'm pretty sure you would file the full-year non-resident MO forms since you didn't physically work in KS at all....TTX should give you the choice when the final state forms come out in late Jan or Feb....(but I can't know the details of your income situation).
Then KS would be part-year resident. (Apparently that is a KS Resident form, but Part B of a Schedule S is included for part-year residents to delineate what sub-part of total year's income was earned while a KS resident) . Then you'd also take a credit for the taxes you had to pay to MO for that job in MO after you moved to KS. Luckily, you didn't work in MO before the move.
Don't plan on filing state taxes before March, you may have to work/re-work the KS Schedule S a couple times, especially if you had ANY income of any type in MO before you moved to KS. Part-year resident tax returns can be confusing, and unfortunately, I don't think we've had any folks really experienced in KS or MO taxes in this forum. i.e., we only know what we (other users) read on the MO and KS tax websites.
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*
