Credit note for revenue contingency

As per our business scenarios , i have design revenue contingency rule at Invoicing Event. it working fine.

Amount is parking under the Unearned Revenue till the time run the Expire Revenue Contingency then transfer to Revenue.

I know that Revenue Contingency works only for Invoicing. not for Credit Note and Debit Memo.

If my Invoice amount is lying under the Unearned Revenue but when in pass the Partial Credit Note my amount hitting direct Revenue account. How to handle this?

Is there any work around is available to handle Credit Note?.