Yes that's how it works anyway. The new card won't change your programming, it is meant to allow you to change to the Flex Pack if you want to and any other updates to security etc it has. Just contact DIRT or call DISH, tell them you might want the Flex Package and you need the new smart card to try it.
Did you already check to see if you need the new card? (not everyone does)
Did you already check to see if you need the new card? (not everyone does)