Where an existing petty sessions area is named in a probation order, in a supervision order or in a community service order, the powers and functions of the justices for such area in relation to the order shall vest in and be discharged by the justices for the respective new petty sessions area and such an order, unless amended in regard to the area named, shall have effect in all respects as if the respective new petty sessions area were named therein.

Where on 1st April 1974 a probation order, a supervision order or a community service order is in force and the probationer, person under supervision or offender in respect of whom the community service order is in force, as the case may be, is residing outside the new petty sessions area which, by virtue of paragraph (1) above, is deemed to be named in the order, the justices for that new petty sessions area may amend the order in regard to the area named as if the probationer, person under supervision or offender in respect of whom the community service order is in force, as the case may be, had changed his residence.