72.For the purposes of this subdivision, a reference in paragraph 1 of section 73, paragraph 2 of section 74, subparagraph 3 of the second paragraph of section 75 or the first paragraph of section 76, 77 or 78 to a certified association of employees or to an association of employees that is certified is also a reference, with the necessary modifications, to an association of employees having filed, within the time specified in the Labour Code (chapter C-27), a petition for certification to represent employees that is still pending on the date section 73 comes into effect for the institution concerned.