If a child support order issued by a tribunal of this State is modified by a tribunal of another state which assumed jurisdiction under a law substantially similar to this part, all of the following are available to a tribunal of this State:
(1) A tribunal may enforce the order that was modified only as to arrears and interest accruing before the modification.
(2) (Deleted by amendment).
(3) A tribunal may provide appropriate relief for violations of that order which occurred before the effective date of the modification.
(4) A tribunal shall recognize the modifying order of the other state upon registration for the purpose of enforcement.