6. Time when property ceases to be bound
(1) For the purposes of any enforcement power the property in goods of the debtor ceases to be bound in accordance with this paragraph.
(2) The property in any goods ceases to be bound —
(a) when the goods are sold;
(b) in the case of money used to pay any of the amount outstanding, when it is used.
(3) The property in all goods ceases to be bound when any of these happens —
(a) the amount outstanding is paid, out of the proceeds of sale or otherwise;
(b) the instrument under which the power is exercisable ceases to have effect; or
(c) the power ceases to be exercisable for any other reason.