Section 43 of the Principal Act is amended by substituting the following subsection for subsection (3):
"(3) In the performance of his or her functions under this Act, the Commissioner shall take all reasonable precautions (including conducting the whole or part of a review under section 34 or an investigation under section 36 otherwise than in public) to prevent the disclosure to the public or, in the case of such a review, to a party (other than a head) to the proceedings concerned of information specified in paragraph (a) or (b) of subsection (1) or matter that, if it were included in a record, would cause the record to be an exempt record.".