Okla. Stat. tit. 68, § 68-3105.1: Tax liens held prior to effective date of act

Any person holding a tax lien pursuant to Sections 3101 through

3125 of Title 68 of the Oklahoma Statutes prior to the effective

date of this act shall be authorized to continue the tax lien or tax

deed process under the laws in effect at the time such tax lien or

tax deed was obtained.