Tenn. Code Ann. § 36-5-2208

In responding to registrations or petitions for enforcement of two (2) or more child support orders in effect at the same time with regard to the same obligor and different individual obligees, at least one (1) of which was issued by a tribunal of another state or a foreign country, a tribunal of this state shall enforce those orders in the same manner as if the orders had been issued by a tribunal of this state.