Sec. 6.08. REINSTATEMENT; SERVICE RETIREMENT ELIGIBILITY. (a) The board of trustees may reinstate any disability retirement benefit that previously has been terminated or reduced if the disabled firefighter's condition has worsened as a result of the same cause for which the person was previously granted disability retirement.

(b) If a person's disability retirement benefit is reduced or discontinued and the person is or subsequently becomes eligible for service retirement under other provisions of this Act, the person is entitled to the service retirement benefit on meeting all requirements for that benefit, reduced by the amount of any disability retirement benefit that the person continues to receive from the fund.