Why don't you ask the collection firm that you already have? TO my knowledge, the court does have enforcement jurisdiction to the extent that it can issue a turnover order against you and if you do not comply, you can be held in contempt. The judgment will not be enforced in another jurisdiction until it is registered there. At which time the court in Utah will have jurisdiction. I also suggest that you consider a motion to set aside the default if you were never served and have a valid defense.