Subject to the provisions of I and II of article 238 decies and article 238 undecies, where the capital gain results from transactions recorded by deeds subject to the merged formality provided for in article 647, the levy is paid within the two-month period provided for the completion of this formality, on the basis of a declaration filed within the same period with the tax department. II. – Where the levy referred to in I is payable on capital gains resulting from court decisions exempt from the registration formality pursuant to 1° of 2 of Article 635, the declaration is made and the duties are paid to the tax department within one month of service of the judgment. III. – (Expired).