4. Repeal and saving.

(a) the previous operation of the provisions so repealed or anything duly done or suffered thereunder,
(b) any right, privilege, obligation or liability acquired, accrued or incurred under the provisions so repealed,
(c) any penalty, forfeiture or punishment incurred in respect of any offence committed against the provisions so repealed, or
(d) any investigation, legal proceeding or remedy in respect of any such right, privilege, obligation, liability, penalty, forfeiture or punishment as aforesaid;