hey i still have not tried, been thinking of getting the terms&conditions of the premiermiles card to glance through. its only about 30k+ miles now in my husband's account but i didnt want to risk SQ confiscating the rest of my KF miles now in my account (abt 75k worth!). so thought of checking if the t&cs explicitly state that you cannot transfer to a 3rd party account. i know the DBS altitude card states that you can only transfer to your own KF account but not sure about the citibank one. will keep you updated.