3. Nothing in Part II of this Order shall apply in relation to any petition for divorce or judicial separation presented before the commencement of this Order, and notwithstanding any repeal or amendment made by this Order the Act of 1939 and any rules of court made for the purposes of that Act shall continue to have effect in relation to proceedings on any such petition which are pending at the commencement of this Order as they had effect immediately before the commencement of this Order.N.I.