Not sure if you can split them and re wafer as the big hold up for dealers last year was not the boxes themselves but getting the locks which had to come from the factory
i too heard that the LC model Top boxes and Panniers cannot be re keyed like they use to do with the Hex heads ! no idea if its true as BMW are telling a few porkies about things at present
Vario Panniers and Topcase can be recoded without dealer involvment. It is very simple to do it yourself. I believe it is not such easy with Alu panniers and boxes for GSA though.
i too heard that the LC model Top boxes and Panniers cannot be re keyed like they use to do with the Hex heads ! no idea if its true as BMW are telling a few porkies about things at present