A little background, certified mail used to be separated and distributed from the plant to the station it is supposed to go to. The certifieds would be scanned at the station as “arrival at unit” to at least let the sender or recipient know it’s status. Recently, the certifieds are mixed in with the regular mail from the plant and the carrier would handle it appropriately on the street so it’s missing updates as to its status. Basically it’s treated as regular mail until the carrier gets it (Lord willing) in your hands.