6Nothing in this Act shall confer on any such legislature as aforesaid any power to repeal, amend or modify the constitutional provisions otherwise than in such manner as may be provided for in those provisions.
In this paragraph, the expression " the constitutional provisions " means this Act, any Order in Council made before the appointed day which revokes the Nigeria (Constitution) Orders in Council, 1954 to 1960, and any law, or instrument made under a law, of any such legislature as aforesaid made on or after that day which amends, modifies, re-enacts with or without amendment or modification, or makes different provision in lieu of, any of the provisions of this Act, that Order in Council or any such law or instrument previously made.