Article 5 Application to extend, vary or discharge order
(1)
Proceedings under Part IV—
(a)
to extend, vary or discharge an order, or
(b)
the determination of which may have the effect of varying or discharging an order,
shall be made to the court which made the order.
(2)
A court may transfer proceedings made in accordance with paragraph (1) to any other court in accordance with the provisions of articles 6 to 14.