Please add the ability to transfer allocated stock

Currently once stock is allocated to an order or customer you are no longer able totransfer this stock. My company has long production runs and where it takes several weeks sometimes to manufacture one order. We allocate the stock to an order as it is manufacturedso sales order processing staff know that it is not available for another customer. The warehouse staff pick the order (sometimes 30 or 40 pallets of goods) and then shrink wrap and labelthe pallets then put them all together in the same location ready to be dispatched. Sometimes the order is not despatched for a week or two after it has been picked. Unfortunately this means that the location of the stock is not accurate once the order has been picked. Please could you allow allocated stock to be transferred to another bin location to resolve this issue.