Appointment of Substitute Arbitrator

Where the mandate of an arbitrator terminates under Sections 42A304 or 42A305 or because of his or her withdrawal from office for any other reason or because of the revocation of his or her mandate by agreement of the parties or in any other case of termination of his or her mandate, a substitute arbitrator shall be appointed according to the rules that were applicable to the appointment of the arbitrator being replaced. Where any arbitrator is replaced, the entire membership of the arbitral tribunal may require hearings previously held to be repeated, unless otherwise agreed to by the parties.