Tex. Finance Code § 59.004

(a) If, at the time of a merger, reorganization, conversion, sale of substantially all of its assets under Chapter 32 or other applicable law, or sale of substantially all of its trust accounts and related activities at a separate branch or other office, a reorganizing or selling financial institution is acting as trustee, guardian, executor, or administrator, or in another fiduciary capacity, a successor or purchasing financial institution with sufficient fiduciary authority may continue the office, trust, or fiduciary relationship:

(1) without the necessity of judicial action or action by the creator of the office, trust, or fiduciary relationship; and

(2) without regard to whether the successor or purchasing financial institution meets qualification requirements specified in an instrument creating the office, trust, or fiduciary relationship other than a requirement related to geographic locale of account administration, including requirements as to jurisdiction of incorporation, location of principal office, or type of financial institution.

(b) The successor or purchasing financial institution may perform all the duties and exercise all the powers connected with or incidental to the fiduciary relationship in the same manner as if the successor or purchasing financial institution had been originally designated as the fiduciary.