where the undertaker requires the extinguishment of any such affected rights, the undertaker must not extinguish such affected rights unless and until replacement rights have been granted to the affected person on equivalent terms and conditions to those affected rights that are being extinguished save that this sub-paragraph will not apply where such replacement rights can only be obtained on land outside the Order land; and

where the undertaker requires the relocation of any such affected rights, the undertaker must not interfere with or suspend such affected rights unless and until the relocated affected rights have been brought into operation provided that this sub-paragraph will not apply where the relocated affected rights can only be obtained on land outside the Order land.