Accessing previous CDocument object after opening a new one.

[countdrak]

When I open a new Doc object, I lose any way to access the previous document.

BOOL CVSTADoc::OnOpenDocument(LPCTSTR lpszPathName) 
{	
	if (!CDocument::OnOpenDocument(lpszPathName))
		return FALSE;
	POSITION myPos = GetDocTemplate()->GetFirstDocPosition();
	CDocument *myDoc = GetDocTemplate()->GetNextDoc(myPos);
	if (myDoc != this) 
	{
             /* Need code for this */
	}
	return TRUE;
}

Once I have opened the new document, I can save and close the previous document, but I want access to the items in it.