70. The collective agreement applicable to all employees of the Commission de la construction du Québec on 31 August 2011 continues to apply to the employees who are referred to in section 85 of the Act respecting labour relations, vocational training and workforce management in the construction industry (chapter R-20) as it reads on 1 September 2011, until it is replaced by a collective agreement between the employer and the association newly certified to represent those employees. If no association has been certified to represent those employees on 1 March 2012, the collective agreement ceases to apply to those employees even if it has not been replaced.