Index: interface_oarchive.hpp
===================================================================
--- interface_oarchive.hpp	(revision 3212)
+++ interface_oarchive.hpp	(working copy)
@@ -28,6 +28,7 @@
 class shared_ptr;
 namespace serialization {
     class extended_type_info;
+    template <class T> struct tracking_level;
 } // namespace serialization
 namespace archive {
 namespace detail {
@@ -64,6 +65,14 @@
         this->This()->save_override(t, 0);
         return * this->This();
     }
+
+    template<class T>
+    typename enable_if_c<
+        (serialization::tracking_level<T>::value == track_never), Archive &
+    >::type operator<<(T const& t){
+        this->This()->save_override(t, 0);
+        return * this->This();
+    }
     
     // the & operator 
     template<class T>