If a child support order issued by a tribunal of this state is modified by a tribunal of another state which assumed jurisdiction pursuant to this chapter, a tribunal of this state:
1. May enforce its order that was modified only as to arrears and interest accruing before the modification.
2. May provide appropriate relief for violations of its order which occurred before the effective date of the modification.
3. Shall recognize the modifying order of the other state, upon registration, for the purpose of enforcement.
97 Acts, ch 175, §172; 2015 Acts, ch 110, §54