Yes, if income received in Missouri or earned in Missouri was greater than $600 for a nonresident or $1,200 for a resident. As a part-year resident, you generally have the option of claiming a Missouri resident credit (Form MO-CR) or Missouri income percentage (Form MO-NRI). Since Florida does not have a state income tax, you are not eligible to claim the resident credit. You must complete Form MO-1040, along with Form MO-NRI to calculate your Missouri income percentage. By completing Form MO-NRI, you will be taxed on the income received while you were a resident of Missouri only."

And: https://dor.mo.gov/faq/taxation/individual/1099g.html