Section 23 of National Law 25871 sets the Rentista category granting you a current status as a temporary resident. The Executive Order implementing this law especifcally states that you need to go to a bank under BCRA control to channel the funds involved. In Accordance with this, the Central Bank issued "Comunicacion A 4717" allowing an income generated abroad to be transfered to a local bank account. To make a long story short, the Central Bank can't issue an order saying the opposite.