46.— (1) The court may discharge a maintenance order at any time after one year from the time it is made, on the application of F11[the person for whose support it provides], where it appears to the court that, having regard to the maintenance debtor’s record of payments pursuant to the order and to the other circumstances of the case, F11[the person for whose support it provides] will not be prejudiced by the discharge.

(2) The court may discharge or vary a maintenance order at any time, on the application of either party, if it thinks it proper to do so having regard to any circumstances not existing when the order was made (including the conduct of each of the civil partners, if that conduct is conduct that the court believes is conduct that it would in all the circumstances be unjust to disregard), or, if it has been varied, when it was last varied, or to any evidence not available to that party when the maintenance order was made or, if it has been varied, when it was last varied.

(3) Notwithstanding subsections (1) and (2), the court shall, on application to it, discharge the part of a maintenance order that provides for the support of a maintenance creditor where it appears to it that the maintenance creditor has deserted and continues to desert the maintenance debtor unless, having regard to all the circumstances (including the conduct of the maintenance debtor) the court is of the opinion that it would be unjust to do so.

F12[(4) That part of a maintenance order which provides for the support of a dependent child shall stand discharged when the child ceases to be a dependent child by reason of his or her attainment of the age of 18 years or 23 years, as the case may be, and shall be discharged by the court, on application to it under subsection (1) or (2), if it is satisfied that the child has for any reason ceased to be a dependent child for the purposes of the order.

(5) Desertion by, or conduct of, a civil partner shall not be a ground for discharging or varying any part of a maintenance order that provides for the support of a dependent child of the civil partners.]