4. From the same date, the construction board shall of right replace the Board:(a) without continuance of suit in any pending case regarding the application of the Act respecting supplemental pension plans (chapter R-17) in the construction industry; (b) in the agreement made 7 April 1970 with the Caisse de dépôt et placement du Québec, pursuant to order in council No. 1459 dated 25 March 1970.