Tex. Bus. Orgs. Code § 402.010

Chapter 10 and any other applicable provisions of this code apply to a transaction consummated by an entity after the mandatory application date, except that if a required approval of the owners or members of the entity has been given before the mandatory application date or has been given after the mandatory application date but at a meeting of owners or members initially called for a date before the mandatory application date, the transaction shall be governed by the prior law.