Michigan Compiled Laws, Chapter 462. Railroads § 462.49

Sec. 49. All powers, duties and privileges imposed and conferred under existing laws upon the commissioner of railroads, the railroad and street crossing board, the crossing board as defined by section 6232 of the Compiled Laws of 1897,  1 and the board of railway consolidations as defined by section 6255 of the Compiled Laws of 1897,  2 and upon the Michigan railroad commission under existing laws are hereby imposed and conferred upon the commission created under the provisions of this act; and wherever in said acts or either of them the commissioner of railroads, the railroad and street crossing board, the crossing board, and the board of railway consolidations, the Michigan railroad commission, or either of said officials or boards, are named, the same shall be construed to mean and apply to and name the Michigan railroad commission created by this act: Provided, That the powers and duties conferred upon the Michigan railroad commission by Act 312 of the Public Acts of 1907, shall continue to be exercised by that commission until the commission provided in section 1 of this act has qualified and organized: Provided further, That all hearings, investigations and complaints pending upon the organization of the commission provided for in section 1 of this act which shall have been begun by or before the commission organized under Act 312 of the Public Acts of 1907,  3 may be continued and orders issued therein in all respects the same as if the complaints presented, investigations made and hearings held by the commission operating under Act 312 of 1907, had been presented to, made by and held by the commission created under section 1 of this act. All tariffs and schedules now on file with the Michigan railroad commission created by said Act 312 shall be of the same effect as if filed with the commission created by this act.