When chargeback is applied on a tax receipt,Proportionate tax amount is also getting reduced.

When chargeback is applied on a tax receipt and balance is getting reduced chargeback amount is showing under adjustments at (Line+tax), but ideally it should be entire at line level and no proportionate tax should be reduced as per client's requirement.Tax amount should not be deducted as it is already paid to the government by the organisation. Therefore there shall be a functionality of not deducting a tax when chargeback is applied against a receipt.

Kindly let me know any solution for non deduction of Tax while applying chargeback.