Index: branches/5.2.x/units/order_items/order_items_tag_processor.php
===================================================================
--- branches/5.2.x/units/order_items/order_items_tag_processor.php
+++ branches/5.2.x/units/order_items/order_items_tag_processor.php
@@ -230,6 +230,7 @@
 		$i = 0;
 		$product_id = $product_object->GetID();
 		$product_id_get = $this->Application->GetVar('p_id');
+		$category_id_backup = $this->Application->GetVar('m_cat_id');
 
 		while (!$list->EOL()) {
 			// load product used in orderitem
@@ -248,6 +249,7 @@
 
 		// restore IDs used in cycle
 		$this->Application->SetVar('p_id', $product_id_get);
+		$this->Application->SetVar('m_cat_id', $category_id_backup);
 		$this->Application->DeleteVar($this->getPrefixSpecial() . '_id');
 
 		if ( $product_id ) {