Commission to exercise powers of authority. Transfer of authority to municipal department and vice versa.

(b) All the foregoing provisions of subsection (a) of this section shall not, however, apply in the event such authority is or becomes a municipal departmental unit as provided in section 7-130b , in which case the powers of the authority shall be exercised by said department in the usual and normal manner in which it functions as such a departmental unit of the municipality under the rules and regulations of said department and the ordinances and the charter of said municipality. (c) If an authority constituted as a municipal departmental unit in any municipality as provided in section 7-130b , is replaced by an authority operating through a commission, the ordinance establishing such succeeding authority may provide that the employees of such succeeding authority shall be deemed to be employees of such municipality for all purposes, and such municipality shall be deemed to be the employer for purposes of section 7-467 ; provided that such ordinance may provide that some or all of such employees of such succeeding authority shall not be subject to the classified civil service requirements of such municipality.