Added 1 new parameter to 'dcBuildAddProductTreeViewItem' to keep track of the additional product's parent product.
Old: public DcAddProductTreeViewItem dcBuildAddProductTreeViewItem(DsiAddProductRefType prod, CatalogTreeViewEnv env) New: public DcAddProductTreeViewItem dcBuildAddProductTreeViewItem(DsiAddProductRefType prod, CatalogTreeViewEnv env, DsProductType parentProd)