Prevent Works Order Completion to Warehouse Different from linked Sales Order

When Completing finished goods on a works order that is linked to a Sales Order there is nothing to prevent a user completing the goods to a different warehouse to that of the Sales Order Line. This then causes allocation/despatch errors as the stock is created in the specified warehouse but cannot be despatched or unallocated without amending tables in SQL. EG: Works Order is linked to a Sales Order Line that has default warehouse of UNIT 1 Goods are Completed and to the Warehouse Quality Control Stock quantity is created in Quality Control and Sage sees this as allocated to the sales order, but this cannot be processed as it is not actually in Warehouse, as the SO line expects. Unable to unallocated using front end Sage.