Import Stock Item Location Update

I’m still new to Acumatica and am making headway with getting our data the way we need it. When we did our initial setup, our bin locations did not get imported as the In & Out default location for items. Because of this, we have to do a lot of manual entry of stock locations. I have run an import scenario to update this information but it’s not updating. Does anyone have a setup they can share with me so I can see what I’m doing wrong. The Source field / Values below are from an already setup import. I modified and used columns in Excel that already existed.