Price Determination for Delivery

When I create the delivery document with reference to sales order, I want to copy the pricing (all the conditions and values) from the sales order to delivery .But the standard SAP is re determining the pricing

<u>Simple Example.</u>

In the sales order line item the net value is 10 $ (Standard price 9 $ and Freight 1 $). This Price is determined by the pricing procedure.

If I change the freight manually to 2 $ in the sales order the net value becomes 11 $ now.

If I create a delivery with reference to this sales order the net price of the line item in deliver will be again 10 $ which is determined by the pricing procedure. But I want to copy the price from sales order line item which is 11 $.

Did any one come across any enhancement to do this, So that the Pricing determination will be suppressed and the pricing will be copied from the reference sales order?