Tex. Bus. & Com. Code § 2.720
Unless the contrary intention clearly appears, expressions of "cancellation" or "rescission" of the contract or the like shall not be construed as a renunciation or discharge of any claim in damages for an antecedent breach.
Acts 1967, 60th Leg., p. 2343, ch. 785, Sec. 1, eff. Sept. 1, 1967.