I had to do this operation on my Kawasaki to get the bags keyed to the same as the ignition key. I believe you CAN do this if you have a new lock with the set of pins. A locksmith had to help me get it right, but it wasn't expensive. He used the ignition key to get the right pins in the new lock and they all work on the same key.
* * Just hanging around until I can ride with Petey, Mack and Rock again. Never forgotten. * *