For a transitional period until 30 September 2019, consignments of animal by-products and of derived products accompanied by a health certificate duly completed and signed in accordance with the appropriate model health certificate set out in Chapters 1, 1a, 2(A), 2(B), 3(A), 3(B), 3(C), 3(D), 3(E), 3(F), 4(B), 4(C), 4(D), 6(B), 8, 10(A), 10(B), 11, 12 and 18 of Annex XV to Regulation (EU) No 142/2011 in the version applicable before the amendments provided for by Article 2 of this Regulation, and, where applicable, by a declaration, which has been duly completed and signed in accordance with the model declaration set out in Chapter 20 of that Annex in its version applicable before the amendments provided for by Article 2 of this Regulation, shall continue to be accepted for importation into and transit though the Union, provided that such health certificates or declarations were duly completed and signed no later than 31 July 2019.