I would guess they were lost during one of the upgrades, maybe 5 years ago. As I recall, there was a system crash that had to do with a duplicate alias naming of gallery files. Been a good while now and the files were not able to be recovered.
If the lead was too short and used in a different installation, a new one could be attached and any broken wires inside removed. If you look at the braiding, at least in the pic shown, the braiding appears larger than the other