Where under any agreement made under section 68 of the Act as applied by section 254(6) thereof any liability or part of a liability charged indifferently on all the revenues of a public body or on any particular revenues or fund of such body is transferred to another public body, the liability or part of the liability shall be charged indifferently on all the revenues of the public body to whom it is transferred and shall cease to be a charge on any revenues or fund of the public body from whom it is transferred.