Actual costing prices

When creating a sales order, or converting a quote to an order, the batch cost is not being used when a batch is allocated to the order. The scenario is fairly, simply, there is a item set as a Batch Numbered and Actual Costing, with an average buying price of 100.00 and no stock present in stock. You raise an order new or from a quote, the line has the unit cost set to 100.00. You then add in a batch using stock adjustments with a cost of 200.00. Then use the Allocate routine in SOP, it then automatically allocates that batch but leaves the unit cost as 100.00 on the order line. It is required for the user to be vigilent amend the unit cost on the order line. Could we have a warning message pop up during order allocation at least so the user is reminded to review the cost of the lines, or alternatively for the cost of the batch to be updated to the order line.