However, securities in unlisted real estate companies for commerce and industry are treated in the same way as listed securities and taxed in accordance with the provisions of 3 of II of Article 150-0 A. In the event of an exchange of securities resulting from a merger, demerger or contribution carried out prior to 1 January 2000, taxation of the net gains referred to in the first paragraph is deferred under the same conditions as those provided for in I ter of article 160. The same applies when the exchange of securities is carried out by a company or grouping whose partners or members are personally liable for income tax on the share of profits corresponding to their rights in the company or grouping. The conditions for application of the second sentence of this paragraph are specified by decree. These provisions also apply to exchanges with a balancing payment where this does not exceed 10% of the nominal value of the securities received. However, the part of the capital gain corresponding to the balance received is taxed immediately. As from 1 January 2000, the provisions of the first paragraph do not apply, in respect of the year in which the securities are exchanged, to capital gains realised as part of a merger, demerger or contribution of securities to a company subject to corporation tax. This exception does not apply to exchanges with a balancing payment where the amount of the balancing payment received by the taxpayer exceeds 10% of the nominal value of the securities received. From 1 January 2000, when the securities received in the cases provided for in the third paragraph are the subject of a new exchange transaction under the conditions of the fourth paragraph or under the conditions provided for in article 150-0 B, taxation of the previously deferred capital gain is automatically deferred until the new securities received are sold, repurchased, redeemed or cancelled.