Industry standard is small to medium boxes will be pitched up to 20 feet. This goes for all carriers. Pack accordingly.

Stuff going weird places is probably a damaged barcode. When these are identified they are fixed and put back into transit assuming other identifying information is still available. You really want to make sure something gets there, print a second label and put in inside the box. If everything is destroyed on the outside and the parcel ultimately ends up in a lost parcel facility, they will open the box and try to identify ownership by contents compared to claims put in.

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