diff --git a/lib/liudesk_cmdb/model.rb b/lib/liudesk_cmdb/model.rb
index 371ec36d0e8a150c3ec2edba158a5b07dd3d80a2..95c18154f1bb11add7de7e5e53c955e3abe7e45b 100644
--- a/lib/liudesk_cmdb/model.rb
+++ b/lib/liudesk_cmdb/model.rb
@@ -218,6 +218,10 @@ module LiudeskCMDB
       @data != @old_data
     end
 
+    def raw_data!
+      @data.merge(@unknown)
+    end
+
     def save!
       if stored?
         update