Navi-DVD and copy protection

Would like to add the current DVD for the touchscreen Navi. But after I had quite a treble *) with the previous version, I just want to put a backup copy into the Navi. Only, is that possible? Is the current 2006/07 DVD copy protected? Does the Navi recognize a self-burned copy? *) After a Navi Software UpDate in the Ford workshop, the DVD was so badly scratched that it was no longer recognized. I say (which is also true) the DVD was OK before. Typical “pronouncement against statement” whose end will probably be in court.