Index: units/orders/orders_config.php
===================================================================
--- units/orders/orders_config.php	(revision 14653)
+++ units/orders/orders_config.php	(working copy)
@@ -88,6 +88,16 @@
 							'DoSpecial' => '',
 							'DoEvent' => 'OnUserLogin',
 						),
+						Array(
+							'Mode' => hAFTER,
+							'Conditional' => false,
+							'HookToPrefix' => 'adm',
+							'HookToSpecial' => '*',
+							'HookToEvent' => Array('OnStartup'),
+							'DoPrefix' => '',
+							'DoSpecial' => '',
+							'DoEvent' => 'OnRestoreOrder',
+						),
 					),
 					'AggregateTags' => Array (
 							Array (
Index: units/orders/orders_event_handler.php
===================================================================
--- units/orders/orders_event_handler.php	(revision 14653)
+++ units/orders/orders_event_handler.php	(working copy)
@@ -438,6 +438,7 @@
 
 		$this->Application->StoreVar('front_order_id', $order_id);
 		$this->Application->RemoveVar('ord_id');
+		$this->Application->Session->SetCookie('shop_cart_cookie', '', strtotime('-1 month'));
 	}
 
 	/**
@@ -542,6 +543,35 @@
 	}
 
 	/**
+	 * Restores order from cookie
+	 *
+	 * @param kEvent $event
+	 */
+	function OnRestoreOrder(&$event)
+	{
+		if ( $this->Application->isAdmin || $this->Application->RecallVar('ord_id') || $this->Application->LoggedIn() ) {
+			// admin OR there is an active order OR logged-in user -> don't restore from cookie
+			return;
+		}
+
+		$cookies = $this->Application->HttpQuery->Cookie;
+		$shop_cart_cookie = array_key_exists('shop_cart_cookie', $cookies) ? $cookies['shop_cart_cookie'] : false;
+
+		if ( !$shop_cart_cookie ) {
+			return;
+		}
+
+		$sql = 'SELECT OrderId
+				FROM ' . TABLE_PREFIX . 'Orders
+				WHERE (OrderId = ' . (int)$shop_cart_cookie . ') AND (Status = ' . ORDER_STATUS_INCOMPLETE . ') AND (PortalUserId = ' . USER_GUEST . ')';
+		$order_id = $this->Conn->GetOne($sql);
+
+		if ( $order_id ) {
+			$this->Application->StoreVar('ord_id', $order_id);
+		}
+	}
+
+	/**
 	 * Redirect user to Billing checkout step
 	 *
 	 * @param kEvent $event
@@ -1140,6 +1170,7 @@
 
 			$this->Application->SetVar($event->getPrefixSpecial(true) . '_id', $id);
 			$this->Application->StoreVar($event->getPrefixSpecial(true) . '_id', $id);
+			$this->Application->Session->SetCookie('shop_cart_cookie', $id, strtotime('+1 month'));
 
 			return $id;
 		}