Billing qty not updating in all line items in Acct. document

Hi,

My client is facing an issue with billing quantity not updating for sale rev. account when the freight charge is applied.

For example:  If it is just the price, the billing quantity for sales rev.  account appears in line item 02(accounting doc.).   When the freight is added in other sales order, the freight gets the billing quantity in line item 02 of accounting document and sale rev. in line item 03 gets zero.

Client would like to get the quantity updated for all line items in accounting document.

I have checked some SAP notes but couldn’t find the one that would address the issue mentioned above. 

Please assist in resolving this issue.

Thanks,

Abdul