The texts of the Directive and of Article 7 of Directive 77/799/EEC of the Council of the European Union of 19 December, 1977 concerning mutual assistance by the competent authorities of the Member States in the field of direct and indirect taxation, as applicable at the date of signing this Convention and to which this Convention refers, are appended as an Annex to, and form an integral part of, this Convention. The text of Article 7 of Directive 77/799/EEC in this annex shall be replaced by the text of the said Article in the revised Directive 77/799/EEC if this revised Directive enters into force before the date from which the provisions of this Convention shall take effect.