Arrears Processing

I am just trying to confirm something that happens in PS 9.0 payroll confirm.  When we do arrears we do a process that adds payment amounts to the ded_arrears balances.  So when we process payroll this could be more then the arrears balance is creating a credit amount.  When no check is produced only a paysheet which increments the arrears the credit balance disappears.  Has anyone had this happen to them and did you find a solution.