Unfortunately I spoke too soon.
When I tried it later no maps where showing, gps cursor was there but no map.
The license folder appears to be different to the original, its giving me headache so I've packed it in for a while.
I've emailed Mazda asking them how its done, or if I can do it.
At the moment the original isn't working either just showing the compass, but it did this before when the first copy attempt didn't work via explorer, so I expect it to start working again later. Hopefully.