The Town, after the acceptance of this subchapter, shall continue to have the capacity to act through and to be bound by its Town Meeting members, who shall, when convened from time to time, constitute Representative Town Meetings; and the Representative Town Meeting shall exercise exclusively all powers vested in the voters of the Town. Action in conformity with all provisions of law now or hereafter applicable to the transaction of Town affairs in Town Meeting shall, when taken by any Representative Town Meeting in accordance with the provision of this subchapter, have the same force and effect as if such action had been taken in a Town Meeting open to all the voters of the Town as conducted before the establishment of representative Town Meeting government.