Tex. Prop. Code § 12.003
(a) If written evidence of title to land has been filed according to law in the General Land Office or is in the public archives, a copy of the written evidence may be recorded if:
(b) A court may not admit a title to land that was filed in the General Land Office as evidence of superior title against a location or survey of the same land that was made under a valid land warrant or certificate prior to the filing of the title in the General Land Office unless prior to the location or survey:
Acts 1983, 68th Leg., p. 3490, ch. 576, Sec. 1, eff. Jan. 1, 1984.