I changed my email address for paizo.com a few weeks ago, and that went 100% smoothly -- except that the Venture Officer ID card still pulls my original email address.
I know the card has been re-generated at least once since the change, because I earned my first Nova after changing the address and the Nova shows up properly on the card.
Not exactly tip top priority, but getting the new email address on the card was one of the main reasons I made the change. Thanks!