A bank employee recently stated that he randomized and re (rubber) banded the bundles..
Could also imply the reason the paper bands are missing that Carr speaks about. the main reason for the removal was so Cooper didn't know where the money came from...
This could also mean that the money itself was "shuffled."
If I'm not mistaken, there were a handful of sequential lots that made up the ransom. I'm not saying that it was literally 001, 002, 003, however, I thought there were a handful of blocks that defined where the ransom came from. I'm not sure if I'm making myself clear on this point.
Nonetheless, in order to avoid there being any semblance of order to the bills they may have been randomized (shuffled).