I can’t seem to find this field within BAQ designer, but it’s in Customer Shipment Entry.
Pics:
Customer Shipment Entry Customization on the field (Field help says the same thing):
In BAQ designer Display Fields on ShipDtl:
As you can see, there is no SellingShipmentQty in here. There’s a few more fields that are like this, but the SellingShipmentQty field is the one I need
It looks like adding a calculated field to add the two SellingQty fields together gives me the correct information. Adding the OrderRel table added a ton of extra info that was definitely not needed, so I was really hoping I didn’t have to do that.