I'm selling one of my bikes, a BMW K1300GT and trying to decide whether or not to sell my BMW NavIV (Zumo 660) with it or to keep it. I have Lifetime Map upgrades for it and I wonder if that presents any problems when/if I sell the unit. I seem to recall reading that the Lifetime Maps were tied to not only a specific unit but also a specific person. If that's the case, it's awful! How can I sell my GPS allowing the new owner to continue those Lifetime updates? Thanks!