Utah Code § 81-8-612: Recognition of order modified in another state.

If a child support order issued by a tribunal of this state is modified by a tribunal of another state that assumed jurisdiction in accordance with the Uniform Interstate Family Support Act, a tribunal of this state:

(1) may enforce the tribunal's order that was modified only as to arrears and interest accruing before the modification;

(2) may provide appropriate relief for violations of the tribunal's order which occurred before the effective date of the modification; and

(3) shall recognize the modifying order of the other state, upon registration, for the purpose of enforcement.