Any cooperative marketing association or corporation incorporated under Article 2 (§ 13.1-312 et seq.) of this chapter, or under the general corporation laws of this Commonwealth, may be brought under the provisions of this article, and be entitled to all the benefits thereof, and be subject to all provisions, restrictions and limitations thereof by amending its articles of association or incorporation in the same manner as set out in § 13.1-334, in cases of such associations and corporations existing under Article 2 of this chapter, either by original incorporation or by amendment, and in cases of such associations and corporations existing under the general corporation laws by amending such articles of association or incorporation according to the provisions of Article 11 (§ 13.1-705 et seq.) of Chapter 9 of this title or Article 10 (§ 13.1-884 et seq.) of Chapter 10 of this title, as the case may be; but when such amendment is had in the case of a corporation or association existing under the provisions of Article 2 of this chapter, all special privileges under such article shall be thereby surrendered.