(1) For the purpose of determining the real question in controversy between the parties to a proceeding or of correcting a defect or error in a proceeding or of avoiding multiplicity of proceedings, the Court may at any stage order that a document in the proceeding be amended or that a party have leave to amend a document in the proceeding.
(2) In this Order "document" includes originating process, an endorsement of claim on originating process and a pleading.
(3) An endorsement of claim or pleading may be amended under subrule (1) notwithstanding that the effect is to add or substitute a cause of action arising after the commencement of the proceeding.
(4) A mistake in the name of a party may be corrected under subrule (1) whether or not the effect is to substitute another person as a party.
(5) Where an order to correct a mistake in the name of a party has the effect of substituting another person as a party, the proceeding shall be taken to have commenced with respect to that person on the day the proceeding commenced.
(6) The Court may, notwithstanding the expiration of a relevant limitation period after the day a proceeding is commenced, make an order under subrule (1) where it is satisfied that any other party to the proceeding would not by reason of the order be prejudiced in the conduct of his claim or defence in a way that could not be fairly met by an adjournment, an award of costs or otherwise.
(7) For the purpose of subrule (6) any other party to the proceeding includes a person who is substituted as a party by virtue of an order made to correct a mistake in the name of a party.
(8) Subrule (6), with the necessary changes, also applies to an application under rule 14.03(2).
(9) Subrule (1) does not apply to the amendment of a judgment or order.