Uh... who's team are you playing for again?
Or are you being sarcastic?
We all know that is less economically feasable than simply a store do a return service after the fixed versions come aboard. And i'm sort of betting realistically that SNKP may only fix JP carts, as the majority of their customers are JP anyway. A cost-effective way of doing this is to take all the carts back, open them up and gut out the PCB's and then slap new PCB's inside. Its what many companies called a rework order. I see this shit all the time at work.
Remember, from their end, they may not be 'collectors', just a business out to do what they are supposed to do: make money and keep a consistant and loyal customer base.