For the purpose of facilitating the application in relation to the successor Union territories, of any law made before the appointed day, as detailed in Fifth Schedule to this Act, the Central Government may, before the expiration of one year from that day, by order, make such adaptations and modifications of the law, whether by way of repeal or amendment, as may be necessary or expedient, and thereupon every such law shall have effect subject to the adaptations and modifications so made until altered, repealed or amended by a competent Legislature or other competent authority.