Section 43A(8) in The Government Of Union Territories Act, 1963
(8)All things done, and all steps taken, before the commencement of this Act in the Union territory of Mizoram with a view to delimiting the territorial constituencies of that Union territory for purposes of elections to the Legislative Assembly of that Union territory shall, in so far as they are in conformity with the foregoing provisions of this section, be deemed to have been done or taken under those provisions as if those provisions were in force at the time such things were done or such steps were taken.]