I tried to get the latest v6.1 of the software - no go - So I've acquired 7.0 - not installed yet. They have a NAM v4.x (not sure if it was 4.1 or 4.0). I will use NRU to backup the old one - but do I have any major concerns with going from 6.1 to 7.0 that anyone knows about? Thanks for any feedback.