4.5 to 2017 upgrade in testing phase. Client tests PO workflow. Creates PO for qty = 4 of a (serialized) item. Processes Receipt of Goods for qty 1. Receipt of Goods Register shows 1 rec'd, 3 back ordered, but when updated, the PO shows 1 rec'd, 0 b/o. The item is marked to allow back orders ( I checked it in DFDM, as well). I created a new PO by copying from the original PO and got the same results. When I created a new PO and did not copy from, using the same item, i get different results (1 received, 3 b/o). Experimented with a different PO and different (serialized) item (not a copy from of another PO). Qty 1 received, qty 3 b/o, as you'd expect. A fluke? Anyone run into this before?