Hi All, I'm porting an existing MFC C++ application to use Boost::Serialization for XML files. My CDocument object contains all the data for the app. I've implemented the serialize function as: template<class Archive> void CMyDoc::serialize(Archive& ar, const unsigned int version) { ar & BOOST_SERIALIZATION_NVP(m_Param1) & BOOST_SERIALIZATION_NVP(m_Param2); } To capture the save and load events, in the CMyDoc.cpp file I have: BOOL CMyDoc::OnOpenDocument(LPCTSTR lpszPathName) { clear(); // clear current params //if (!CDocument::OnOpenDocument(lpszPathName)) // Old MFC serialize code // return FALSE; CEvolveTrafficDoc* pDoc = this; // pointers the same here std::ifstream ifs(lpszPathName); boost::archive::xml_iarchive ia(ifs); ia >> boost::serialization::make_nvp("MyDoc",pDoc); // pointer changes here return TRUE; } BOOL CMyDoc::OnSaveDocument(LPCTSTR lpszPathName) { //if (!CDocument::OnSaveDocument(lpszPathName)) // Old MFC serialize code // return FALSE; std::ofstream ofs(lpszPathName); boost::archive::xml_oarchive oa(ofs); oa << boost::serialization::make_nvp("MyDoc",this); return TRUE; } Saving a document works fine. The problem is that loading a document doesn't work. The boost library seems to copy the CMyDoc object because the pointer comes back a different address. This means that the loaded file isn't loaded into the current document. Can a CDoc overwrite itself with boost? It can with MFC CArchive. If I overload the CMyView to capture the file open and save events, the MRU list management offered by the Doc/View architecture won't happen. I'm sure this has been done a million times, but I can't find any information online. Weird! Any help much appreciated. Thanks, Colin