Hello, I have a base class: class base {...}; and a derived class: class derived : public base {...}; and a template class: template <class T> class ElementList { vector* m_Elements; ... friend class boost::serialization::access; template<class Archive> inline void serialize(Archive & ar, const unsigned int version) { ar & BOOST_SERIALIZATION_NVP(m_Elements); } } Now i create a class: class myclass : public ElementList<base> { friend class boost::serialization::access; template<class Archive> inline void serialize(Archive & ar, const unsigned int version) { ar & BOOST_SERIALIZATION_BASE_OBJECT_NVP(ElementList); } } I want to use boost::serialization on myclass I create somwhere in my program several "derived" elements (which are serialized at this point) After, I put them in the m_Elements vector of myclass (hérited from ElementList<base>). So, the "derived" are stored as "base" elements and the problem is that they are serialized as "base" elements and not "derived" elements. Have you got an idea of how I can solve this issue? Thanks by Advance Emmanuel -- View this message in context: http://www.nabble.com/boost%3A%3Aserialization-of-a-template-class-tp1910937... Sent from the Boost - Users mailing list archive at Nabble.com.