Okla. Admin. Code § 670:15-13-7
An exemption issued prior to the effective date of the rules in this Subchapter shall remain valid as provided in the exemption. However, in the event an application is received for another vehicle for an applicant previously issued an exemption , these rules shall apply as if no prior exemption had been issued.
Added at 41 Ok Reg, Number 23, effective 8-25-24