Tex. Est. Code § 33.053
If probate proceedings involving the same estate are commenced in more than one county, each proceeding commenced in a county other than the county in which a proceeding was first commenced is stayed until the court in which the proceeding was first commenced makes a final determination of venue.
Added by Acts 2011, 82nd Leg., R.S., Ch. 1338 (S.B. 1198), Sec. 2.04, eff. January 1, 2014.