How to get old manual values entered in sales order

[reddykrishnae]

Dear members.

User Create sales order based on contract.

prices are carried out manually in contract, those values are copied to Sales order.

But, user used VA05 and did mass update--> pricing update --> B -- Carry out new pricing.

Then Prices are became for some and for other it took condition records values.

now, how could I get old values in pricing.

Thanks,

Reddy Krishna.