Index: /branches/version-2_5-dev/data/class/pages/products/LC_Page_Products_Detail.php
===================================================================
--- /branches/version-2_5-dev/data/class/pages/products/LC_Page_Products_Detail.php	(revision 19947)
+++ /branches/version-2_5-dev/data/class/pages/products/LC_Page_Products_Detail.php	(revision 19962)
@@ -258,4 +258,7 @@
                         break;
                     }
+
+                    $this->tpl_product_class_id = $objProduct->classCategories[$product_id][$_POST['classcategory_id1']][$_POST['classcategory_id2']]['product_class_id'];
+
                     // 商品数の選択を行う
                     $this->tpl_mainpage = "products/select_item.tpl";