Billing and Sale order line items mismatch

Hello All ,

Multiple Sale orders are used in a single billing , The billing lines holds the information of sale order's value and sale order's line item value .

Actual sale order line item is different than the sale order's line present in the Invoice lines . We are not able to link the one to one .

Where as the other ways billing holds the information correctly in the billing .

Any possible way we could get the actual sale orders line information in the billing.

Thank you .

Pon Raja Sekharan.