Tex. Code Crim. Proc. art. 11.51

If a writ of habeas corpus be made returnable before a court in session, all the proceedings had shall be entered of record by the clerk of the court, as in any other case in the court. When the application is heard out of the county where the offense was committed, or in the court of criminal appeals, the clerk shall transmit a certified copy of all the proceedings on the application to the clerk of the court which has jurisdiction of the offense.