Negative deductions into Arrears

Summary:

We have created flex credit plan in benefits so that the credit amount offsets the premium amounts. Everything works perfectly but in cases where employee is on LOA paid or doesn't make sufficient earnings, this -ve deduction (credit) gets paid out whereas benefit deduction go into arears. So my question is, is there a way to push these -ve deductions into arrears if medical deductions are going into arrears?

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