I just activated my new account and its showing that I have access to all expansions from the old client but not to the Empires expansion. Theoretically I am being credited for a year of Gold membership, which should give me access to all expansions.
Is there any way to get Empires added to my account, since its the only one that is missing?
You're being credited with a year of all sets but Empires, the Gold price is reduced since that's all you have left to buy. If you try to purchase for more than a year at a time you'll see that the price per month increases once you no longer get this discount.