Long ago I used to work for Fedex Ground... Packages like this are called "Top Crushables" they're usually in a big clear trashbag by the hundreds and we'd toss them on the top of the other packages to fill the trailer all the way to the ceiling. Sometimes the bags would break open and packages that weighed up to 140lbs would be on top of them. There was really nothing we could do, I mean it moves as the trailer does. Not to mention we had to move 410 Packages an hour. I'd seen boxes flatter than a pancake, the only thing I can say, is make sure you fortify the box so it doesn't flatten out, so the tape doesn't get pulled off. OR, wrap the whole damn thing in tape, like a coffin so there are no ways for it to fall out.
My guess is that it's still out there, either in the bottom of a shipping container, or a belt somewhere.