Transferred state portable service cannot be used to satisfy the full-time-equivalent employment with a participating employer service requirement. However, in any case where such full-time-equivalent service was transferred to the Teachers' Retirement System and is later transferred back to OPERS, such service may be deemed to satisfy the full-time-equivalent employment requirement. Portable service may be used to determine eligibility for retirement or vesting purposes and to determine the amount and type of retirement benefit.
Okla. Admin. Code § 590:10-11-13