According to Missouri DOR, I am considered a Non-Resident. Question - Is an IRA withdrawal taken during brief time I did reside in MO subject to Missouri state taxes?

MO tax info indicates non-residents pay taxes on income from MO sources and examples include from MO businesses, lottery winnings, etc... nothing regarding an IRA withdrawal from an investment firm with HQ in another state.  Did ask MO DOR about this and interest and dividend income - they replied - Ask an accountant