I would just indicate that you were a full year MO resident with no move, and treat KS as being there temporarily (like a college summer job in Colorado) since you were only there for a few months and really not long enough to be considered a resident of KS.
Then file a nonresident KS tax return for any income earned in KS, and a resident MO tax return for everything...and you'll get to take a credit for the taxes you had to pay to KS for whatever income you earned at a KS job (of course, if you didn't work in KS, then you can just skip the KS nonresident tax return)
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*
