When an item is marked for QA, the location changes automatically to the QA site during PO receipt. However the inventory can still be used if a user changes the site on a transaction to QA, and it still shows as part of the total on hand and available inventory. It would be great if quantity types could be used so the inventory could automatically go to In Use or Returned, similar to RMAs, and then it would require transfer in order to use it.