Final answer:
The life event was not properly backed out.
Step-by-step explanation:
The reason for this is that the life event was not properly backed out. When a plan backed out in an Open Life Event, it means that the selection made during the event was canceled. However, in this case, the benefits administrator reprocessed the open life event and found the earlier selection as originally enrolled in the plan. This suggests that the backing out process was not successful.