Copying Items
To copy one or more items, including their stockroom locations, current bills of material, and user-defined fields:
Note:  To copy 
 an item to multiple sites in the same intranet, you can use the Multi-Site Items form.  However, this 
 method does not copy the current BOM of the item. To copy the BOM for 
 the item from one site to another, use the Multi-Site Biil of Material Builder.