There are different ways to see what I am looking for in NS but, when you activate inbound shipment, there is a new column on POs called Quantity on shipments. When you click on the 3504 in the screenshot below you get this popup that shows the inbound shipments with their expected delivery date - this is what I am trying to pull into a PO level saved search because before the item ships, the ETA is maintained on the PO but after it ships, its maintained on the shipment