Thread:Houki Minami/@comment-26709288-20170612195712/@comment-26087580-20170612203052

Well, its not stated that the traded pieces individuals carry their original owner's piece. Maybe Lady Phenex took her piece back and issei used his piece to make ravel his bishop, same with asia, xenovia and Rose.

Remember that when Issei died, only his eight pieces were bring back, meaning they can be retreated for later use in case the original piece dIes. Maybe trading means taking your piece and the trader uses their piece to turn Into their servant. With all due respect, much more like a leash on dogs: they keep the leash, they change the dog, and use the same leash on another dog.