(1) If a restrictive covenant discharged by section 12 is also a term of a contract, that term ceases to have effect by force of this section on the discharge of the covenant.
(2) If a person bound by an agreement lodged under section 9 ceases to be the owner of the Corporation pipeline or the Heatane pipeline, the agreement ceases to bind that person.
(3) Subsections (1) and (2) do not affect the previous operation of a covenant or agreement or any right or liability resulting from that previous operation.