[Zope] Cutting, copying and pasting products

Given the "obscure" nature of the internals of any given product from the point of view of the Zope management software, I can see why it might not be desirable to duplicate product "instances", but how can one move products around the database and into folders other than the one an "instance" was created in? It is possible to move folder objects around, but products can supposedly only be cut, copied and pasted in the products directory. Could anyone give a rationale for this? Regards, Paul