i did not check it. But i think it should work out. oka i am gonna Backup my SD Nav & copy it on another SD & chk if it works or not.
BUT do remember, the BACK UP you make should be from your own Navigation Unit's SD because it has a file which has a Device Code/ Unit code Which is matched & accepted by Nav unit in Car with that in SD card to work it out.
Rest i will check tomorrow & Post here what happens.