(1) Subrule (2) applies if the expert changes, in a material way, an opinion included in a report prepared by the expert under this part (an
"earlier report" ).
(2) Unless the expert knows the proceeding has ended, the expert must, as soon as practicable after the change of opinion, give written notice of the change of opinion, and the reason for the change, to—(a) if the expert is a court-appointed expert—the registrar; or(b) otherwise—the party who appointed the expert.
(3) If a notice under subrule (2) is given to the registrar, the registrar must refer the matter to the court for directions.
(4) If a notice under subrule (2) is given to the party who appointed the expert, the party must apply to the court for directions.