Utah Code § 81-15-121
§ 81-15-121. Modification of confirmed award or judgment.
If a party requests under a law of this state, other than this chapter, a modification of an award confirmed under Section 81-15-115 or judgment on the award based on a fact occurring after confirmation: (1) the parties shall proceed under the dispute-resolution method specified in the award or judgment; or (2) if the award or judgment does not specify a dispute-resolution method, the parties may: (a) agree to arbitrate the modification before the original arbitrator or another arbitrator; or (b) absent an agreement under Subsection (2)(a), proceed under a law of this state, other than this chapter, governing modification of a judgment in a family law proceeding.