I've never had this happened before but apparently a package has been shipped internationally and is now missing. It was shipped USPS Global Priority to Canada. I was told delivery confirmation cannot be used as a means to track an item shipped globally. And that the only way to track it was by the serial # on the USPS Global Priority box that I used to ship the item in. I still have that # printed on my receipt and I will goto the post office tomorrow to talk to them. Should I expect them to even find it?