Tex. Code Crim. Proc. art. 21.30

When a cause has been improvidently transferred to a court which has no jurisdiction of the same, the court to which it has been transferred shall order it to be re-transferred to the proper court; and the same proceedings shall be had as in the case of the original transfer. In such case, the defendant and the witnesses shall be held bound to appear before the court to which the case has been re-transferred, the same as they were bound to appear before the court so transferring the same.