TIBCO- Employee Enrollment on terminated plan

We (Tibco) have an employee that went into the system to update the commuter benefit effective 3/1/17. The event appears to be correct, but when Patrick ran the billing invoice it appears the Vision plan reverted back to the plan that was in effect for 2016 and termed it out. This plan is no longer available for 2017. I have attached a print screen of the “view history” and the commuter event (see attached)

What could possibly have caused this?

I (Tibco) had to create an event for 1/1/2017 in order to add the 2017 vision base plan in his record.