(1) The rules adopted by orders of the Court of Appeals dated December 19, 1952 and February 6, 1953 shall take effect on July 1, 1953. Amendments to these rules shall become effective when so designated by the Supreme Court.

(2) The original rules and any amendments thereto govern all proceedings in actions brought after they take effect and also further proceedings in actions then pending, except to the extent that in the opinion of the proper court, expressed by its order, their application in a particular action pending when the original rules or amendments thereto take effect would not be feasible, or would work injustice, in which event the procedure existing at the time the action was brought applies.