Jurisdiction of all cases pending or determined in the District Court for the Territory of Alaska not transferred to the United States District Court for the District of Alaska shall devolve upon and be exercised by the courts of original jurisdiction created by said State, which shall be deemed to be the successor of the District Court for the Territory of Alaska with respect to cases not so transferred and, as such, shall take and retain custody of all records, dockets, journals, and files of such court pertaining to such cases. The files and papers in all cases so transferred to the United States district court, together with a transcript of all book entries to complete the record in such particular cases so transferred, shall be in like manner transferred to said district court.