If an opinion that is published under subsection 16.2(4) interprets a provision of the Act in a way that contradicts an interpretation of that provision provided in a previously issued opinion, the new interpretation does not replace the former interpretation until the date that the new opinion is issued under section 16.2.
An interpretation of a provision of the Act in a guideline or interpretation note that is published under subsection 16.1(5) or in an opinion that is published under subsection 16.2(4) that contradicts an interpretation of that provision provided in a previously issued guideline, interpretation note or opinion does not replace the interpretation in that previously issued guideline, interpretation note or opinion until the date that the guideline or interpretation note is issued under section 16.1 or the opinion is issued under section 16.2.