(1) On and from the appointed day,—
         (a) in the Advocates Act, 1961 (25 of 1961), in section 3, in sub-section (1), for clause (b), the following clause shall be substituted, namely:—
             "(b) for the States of Arunachal Pradesh, Assam, Manipur, Meghalaya, Mizoram, Nagaland and Tripura to be known as the Bar Council of Assam, Nagaland, Meghalaya, Manipur, Tripura, Mizoram and Arunachal Pradesh;";
         (b) the Bar Council of Assam, Nagaland, Meghalaya, Manipur, Tripura and Mizoram shall be deemed to be the Bar Council of Assam, Nagaland, Meghalaya, Manipur, Tripura, Mizoram and Arunachal Pradesh.
     (2) Any person who, immediately before the appointed day, is an advocate entitled to practise in the High Court of Assam, Nagaland, Meghalaya, Manipur, Tripura and Mizoram shall be entitled to practise as an advocate in the common High Court.
     (3) All persons who, immediately before the appointed day, are advocates on the roll of the Bar Council of Assam, Nagaland, Meghalaya, Manipur, Tripura and Mizoram shall, as from that day, become advocates on the roll of the Bar Council of Assam, Nagaland, Meghalaya, Manipur, Tripura, Mizoram and Arunachal Pradesh.
     (4) The right of audience in the common High Court shall be regulated in accordance with the like principles as, immediately before the appointed day, are in force with respect to the right of audience in the High Court of Assam, Nagaland, Meghalaya, Manipur, Tripura and Mizoram:
     Provided that as among the Advocates-General of the States of Arunachal Pradesh, Assam, Manipur, Meghalaya, Mizoram, Nagaland and Tripura, the right of audience shall be determined with reference to their dates of enrolment as advocates.