Supplemental Vacation Hours Remain on the Earnings Statement

One of our Employee Groups is "Supplemental" employees. These employees get 40 hours of vacation( automatically) every Jan 01. Once the Supplemental employee change over to a 'Regular" employee, their vaction is accrued differently. Currently when I look at our earnings statement, I see the Supplemental vacation hours remain on the pay statement even after the Supplemental employee has been transfered over to a "Regular" employee.

How can I stop this information from pulling in on the earnings statement after the employee has transferred to a "Regular" employee?

Thanks,