Certain qualified disability benefits.
(2) Certain qualified disability benefits. In general, qualified disability benefits (within the meaning of section 411(a)(9)) are not taken into account under this section. However, a qualified disability benefit that results from the crediting of compensation or service for a period of disability in the same manner as actual compensation or service is credited under a plan's benefit formula is permitted to be taken into account under this section as an accrued benefit upon the employee's return to service with the employer following the period of disability, provided that the qualified disability benefit is then treated in the same manner as an accrued benefit for all purposes under the plan.