Ability to move a Stock item between Product Group types (Traceable/Non-Traceable)

Within the Stock Control module it is currently possible to change the Product Group of an item if both Product Groups are either traceable/non-traceable, or if the new group is traceable and doesn&t use the Actual Costing Method. At present you cannot move an item from a non-traceable group to a traceable group. This means that if a customer wishes to implement traceability on existing parts after creation this cannot be done (without a large amount of work in the SQL tables and a loss of historical information). Can this functionality be included into the system? I would assume that temporary batch/serial numbers would be created at the same time using either the average cost price or latest cost price (user choice?).