Section 217(2) in The West Bengal Panchayat Act, 1973
(2)With the appointment of the authority, person or persons referred to in sub-section (1), all the members of the Gram Panchayat, Anchal Panchayat, Anchalik Parishad, or Zilla Parishad, as the case may be, in respect of which such authority, person or persons, as the case may be, has been so appointed shall vacate their offices as such members.