Notwithstanding Section 3 of this title and Section 299.15 of Title 60 of the Oklahoma Statutes, the corpus and income of a preservation trust shall be exempt from attachment or execution and every other species of forced sale and no judgment, decree, or execution can be a lien on the trust for the payment of debts of a grantor, except a child support judgment. Any incremental growth derived from income or an increase in value of the corpus of a preservation trust shall also be considered protected by this section. Transfer of an asset to a preservation trust does not affect any mortgage, security interest or lien to which that asset is subject.
Okla. Stat. tit. 31, § 12