An amendment made to section 15A or the Director of Public Prosecutions Regulation 2010 by the Director of Public Prosecutions Amendment (Disclosures) Act 2012 extends to an alleged indictable offence that a law enforcement officer investigated, or started to investigate, before the commencement of the amendment if the Director first exercises a function under this Act, in respect of the prosecution of the offence, after the commencement of the amendment.