Tex. Family Code § 34.008

(a) Except as provided by Subsection (b), an authorization agreement under this chapter terminates if, after the execution of the authorization agreement, a court enters an order:

(1) affecting the parent-child relationship;

(2) concerning custody, possession, or placement of the child;

(3) concerning access to or visitation with the child; or

(4) regarding the appointment of a guardian for the child under Subchapter B, Chapter 1104, Estates Code.

(b) An authorization agreement may continue after a court order described by Subsection (a) is entered if the court entering the order gives written permission.

(c) An authorization agreement under this chapter terminates on written revocation by a party to the authorization agreement if the party:

(1) gives each party written notice of the revocation;

(2) files the written revocation with the clerk of the county in which:

(A) the child resides;

(B) the child resided at the time the authorization agreement was executed; or

(C) the adult caregiver resides; and

(3) files the written revocation with the clerk of each court:

(A) that has continuing, exclusive jurisdiction over the child;

(B) in which there is a court order or pending suit affecting the parent-child relationship concerning the child;

(C) in which there is pending litigation concerning:

(i) custody, possession, or placement of the child; or

(ii) access to or visitation with the child; or

(D) that has entered an order regarding the appointment of a guardian for the child under Subchapter B, Chapter 1104, Estates Code.

(d) Repealed by Acts 2017, 85th Leg., R.S., Ch. 244 (H.B. 871), Sec. 13, eff. September 1, 2017.

(e) If both parents have signed the authorization agreement, either parent may revoke the authorization agreement without the other parent's consent.

(f) Execution of a subsequent authorization agreement does not by itself supersede, invalidate, or terminate a prior authorization agreement.