(1) Notwithstanding that no provision or insufficient provision has been made under section 79 for the adaptation of a law made before the appointed day, any court, tribunal or authority required or empowered to enforce such law may, for the purpose of facilitating its application in relation to the State of Assam, Manipur, Meghalaya or Tripura or to the Union territory of Mizoram or Arunachal Pradesh construe the law in such manner, without affecting the substance, as may be necessary or proper in regard to the matter before the court, tribunal or authority.
     (2) Any reference to the High Court of Assam or the High Court of Assam and Nagaland or to the Court of the Judicial Commissioner for Manipur or the Court of the Judicial Commissioner for Tripura in any law shall, unless the context otherwise requires, be construed, on and from the appointed day, as a reference to the common High Court.