206. Notwithstanding the amendments made to paragraph 19 of Schedule 5 to the 2013 Regulations (prescriptions for feedingstuffs containing a veterinary medicinal product) by this instrument, a prescription issued before the end of the period which expires six months after the date on which this instrument comes into force in accordance with that paragraph as it had effect immediately before the coming into force of this instrument continues to be valid until it expires in accordance with paragraph 19(2).