shall, by appropriate orders, be transferred to the court to which the matter would have been submitted had this Act been in full force and effect at the time such appeal was taken or other proceeding commenced, and further proceedings with respect to the case shall be had in the same manner and with the same effect as if the appeal or other proceeding had been filed in such court. (3) A petition for rehearing or a petition for rehearing en banc in a matter decided before the effective date of this Act, or submitted before the effective date of this Act and decided on or after such effective date as provided in paragraph (1), shall be treated in the same manner and with the same effect as though this Act had not been enacted. If a petition for rehearing en banc is granted, the matter shall be reheard by a court comprised as though this Act had not been enacted. 11. Temporary assignment of circuit judges between circuits Section 291 of title 28, United States Code, is amended by adding at the end the following new subsections: (c) The chief judge of the Ninth Circuit may, in the public interest and upon request by the chief judge of the Twelfth Circuit, designate and assign temporarily any circuit judge of the Ninth Circuit to act as circuit judge in the Twelfth Circuit. (d) The chief judge of the Twelfth Circuit may, in the public interest and upon request by the chief judge of the Ninth Circuit, designate and assign temporarily any circuit judge of the Twelfth Circuit to act as circuit judge in the Ninth Circuit. . 12. Temporary assignment of district judges between circuits Section 292 of title 28, United States Code, is amended by adding at the end the following new subsections: (f) The chief judge of the Ninth Circuit may in the public interest— (1) upon request by the chief judge of the Twelfth Circuit, designate and assign one or more district judges within the Ninth Circuit to sit upon the Court of Appeals of the Twelfth Circuit or a division thereof whenever the business of that court so requires