Duplicate an XML Document (with a different name)

I want to have a master version of certain xml files (kept in the resources folder), and an editable version. I have some lengthy code which transfers information line by line, but I was wondering if the following would effectively duplicate the document:

    //Load Master file from resources
     TextAsset oldTextDoc = (TextAsset)Resources.Load (fileName + "Master", typeof(TextAsset));
     if (oldTextDoc == null)
      Debug.LogError ("File " + fileName + "Master could not be found");
     
     //create new xml document
     XmlDocument newXMLDoc = new XmlDocument ();
     newXMLDoc.Load (new StringReader (oldTextDoc.text));
     
     //Save new file in appropriate location
     StreamWriter outStream = System.IO.File.CreateText(basePath+fileName+".xml");
     newXMLDoc.Save (outStream);
     outStream.Close ();
 

Thank you!