Section 21O(1) in The Punjab Slum Areas (Improvement and Clearance) Act, 1961
(1)All contracts, agreements and other instruments of whatever nature subsisting or having effect immediately before the date of the establishment of the Board and to which the State Government or such other Authority is a party, in so far as such contracts, agreements and instruments are relatable to the improvement of the slum area, the clearance of a slum area and the re-development of a slum clearance area shall be of full force and effect against or in favour of the Board and may be enforced or acted upon as fully and effectually as if instead of the State Government or such other authority the Board had been a party thereto or as if they had been entered into or issued in favour of the Board.