Every time we place a diamond on one of our measuring devices our previously graded diamonds are searched for identical measurements, shapes and weights. We use this program to see if stones are being re-submitted, just like the GIA does. I think labs have to protect themselves much like everyone else needs to do. If you want to be sure your stone wont be switched go to the biggest best jeweller in town who has the most to loose, and pay the price and enjoy the service. I don't think it was objective enough.
Media needs bad news.