How to reduce misdeliveries and re-scans when USPS mail forwarding labels are misapplied

During route casing this morning, I found a batch of forward mail with labels for an old address bag. It seems like a minor issue, but if I had taken it out, it likely would have resulted in misdeliveries, re-scans, and having to explain it to the customer the next day. On USPS routes, these types of errors usually aren't just someone being lazy; they happen when COA information, tray labels…