law: The Haryana and Uttar Pradesh (Alteration of Boundaries) Act, 1979
  7. Provision as to sitting members.-
  (1) Every sitting member of the House of the People representing any parliamentary constituency the extent of which has been altered by virtue of the provisions of this Act shall, notwithstanding such alteration, be deemed, as from the appointed day, to have been elected to that House by that constituency as so altered.
  (2) Every sitting member of the Legislative Assembly of the State of Haryana or Uttar Pradesh representing any assembly constituency the extent of which has been altered by virtue of the provisions of this Act shall, notwithstanding such alteration, be deemed, as from the appointed day, to have been elected to the said Legislative Assembly by that constituency as so altered.
  (3) Every sitting member of the Legislative Council of the State of Uttar Pradesh representing any council constituency the extent of which has been altered by virtue of the provisions of this Act shall, notwithstanding such alteration, be deemed, as from the appointed day, to have been elected to the said Legislative Council by that constituency as so altered.