I think the termination amendment should address it. However, if it didn't then the Plan Administrator has to interpret the documents to make that determination. Finally, I think consistency with how payrolls that crossed the plan year were handled would possibly influence the final decision. If 9/30 was the plan year end, would compensation from 9/19 to 9/30 have been accrued or would all the compensation have been considered earned on 10/2 (similar to which w-2 the comp would show on for a calendar year end).