Different Cost Assignments for Revenue and Goods Issue.

Hi, We have a requirement that revenue from a sales order should be posted to an internal order. Our customer has asked that the cost of that sales generated by the goods issue be posted against a cost center. It makes no sense to me as I would expect the order to evaluate the profitability of the sale. However the customer is always right and they are insistent they want to cost and revenue separated. No matter what I try the goods issue always ends up against the same internal order specified in the original line item. Even if I assign a cost center at header level (order reason) only the internal order has the cost posted. Is there any way I can separate the account assignment for the revenue to an order and the cost of sale to a cost center?