You were a part year resident of both states. Your residency changed when you physically moved (started spending more time there than in WS), not just belongings, to the new state.
"so want to get this correct". That's going to be subject to interpretation. It also depends on which south state you moved to. If it's a no tax state (TX, FL, TN), you don't get to say it all comes out even. The most stringent interpretation would be the last night you stayed in the WS house.
