Tex. Civil Practice and Remedies Code § 31.005: EFFECT OF ADJUDICATION IN SMALL CLAIMS OR JUSTICE OF THE PEACE COURT.

A judgment or a determination of fact or law in a proceeding in small claims court or justice of the peace court is not res judicata and does not constitute a basis for estoppel by judgment in a proceeding in a county court or statutory county court, except that the judgment rendered is binding on the parties thereto as to recovery or denial of recovery.

Acts 1985, 69th Leg., ch. 959, Sec. 1, eff. Sept. 1, 1985.