No withdrawal of territory under the provisions of Section 5846 or 5853 shall become effective unless and until any outstanding contract of the maintenance district from which a portion is sought to be withdrawn has expired, or such contract, with the consent of the parties thereto, has been modified or canceled so as to relieve such maintenance district of further obligation to pay for future maintenance within the territory so withdrawn.
(Amended by Stats. 1955, Ch. 201.)