On the Inventory/InPut Inventory Tab, the only box that has the magnifying glass is the Quick Add Item.
We are using the box below that – Search Items from List, one. We click there, scan the UPC and it jumps to an item that does not correspond to the correct one, you have to manually hit enter again then it goes to the right item.
As far as the missing items, here are two: 88040 and X12RS15F. Both show up fine with those numbers or the UPC on the SKUs page but not Inventory Count.