Unique situation - would appreciate any thoughts/insights.
Background: Participant worked in disqualifying employment for more than a decade while receiving pension benefit. Administrator found out and suspended benefits several years ago. During suspension (and continued DE), participant reached age such that benefits should have resumed at 75% rate, but didn't. Consequently participant has received a large overpayment, but also didn't receive 75% benefits for a several-year period during which they should have been paid. We're now trying to set things straight.
Question: Must the fund repay several years' worth of unpaid 75% benefits in a lump sum, and then resume monthly reduced benefits? Or can the fund simply offset that unpaid amount against the participant's overpayment, arrive at a net overpayment, and then resume monthly reduced benefits? This is apart from any separate action the fund may take relative to the overpayment - just want to get the resumption of benefits right.