Texas Estates Code - EST § 33.102. Transfer for Want of Venue

(a) If it appears to the court at any time before the final order in a probate proceeding is rendered that the court does not have priority of venue over the proceeding, the court shall, on the application of an interested person, transfer the proceeding to the proper county by transmitting the file for the proceeding in accordance with the procedures provided by Section 33.105 to the proper court in that county .

(b) The court of the county to which a probate proceeding is transferred under Subsection (a) shall complete the proceeding in the same manner as if the proceeding had originally been commenced in that county.

(c) If the question as to priority of venue is not raised before a final order in a probate proceeding is announced, the finality of the order is not affected by any error in venue.