(1) If the Family Division has jurisdiction under section 5-453, it may proceed with the case unless a court in another state acquires jurisdiction under provisions similar to section 5-453 before the appointment or issuance of the order.
(2) If the Family Division does not have jurisdiction under section 5-453, whether at the time the petition is filed or at any time before the appointment or issuance of the order, the Family Division shall stay the proceeding and communicate with the court in the other state. If the court in the other state has jurisdiction, the Family Division shall dismiss the petition unless the court in the other state determines that the Family Division is a more appropriate forum.