States District Court for the District of Puerto Rico or the Supreme Court of Puerto Rico, in any case finally decided prior to the admission of the State of Puerto Rico into the Union, whether or not an appeal therefrom shall have been perfected prior to such admission. The United States Court of Appeals for the First Circuit and the Supreme Court of the United States, shall have the same jurisdiction in such cases as by law provided prior to the admission of the State into the Union. Any mandate issued subsequent to the admission of the State, shall be to the United States District Court for the District of Puerto Rico or a court of the State, as appropriate. Parties shall have the same rights of appeal from and appellate review of all orders, judgments, and decrees of the United States District Court for the District of Puerto Rico and of the Supreme Court of Puerto Rico, in any case pending at the time of admission of the State into the Union, and the Supreme Court of Puerto Rico and the Supreme Court of the United States shall have the same jurisdiction therein, as by law provided in any case arising subsequent to the admission of the State into the Union.