Texas Property Code - PROP § 181.055. Notice of Release

(a) A fiduciary or other person in possession or control of property subject to a power, other than the donee, does not have notice of a release of the power until the original release or a copy is delivered to the fiduciary or other person.

(b) A purchaser, lessee, or mortgagee of real property subject to a power who has paid a valuable consideration and who is without actual notice does not have notice of a release of the power until the instrument releasing the power is filed for record with the county clerk of the county in which the real property is located.