I've had a paid license for a while now on a garbage usb. I bought 3 name brand ones and stood them up (rc2) on trial licenses, logged into My Servers on all of them.
Did the once-a-year 'replacement' on "es4" moving the old license to one of the new sticks. It left a ghost entry for the trial key, on the same GUID as the paid one. In hindsight I should have signed out of the trial before migration because it left the old trial entry as a ghost and in need of cleanup.
The screen snapshots show when it's logged and when it's not. If I change the machine name on the live system, the name changes on offline trial one too, as they are both linked to the same GUID. It's my impression that this could reasonably called working as designed, in beta, but really could use optimization to auto-purge or allow user deletion of old records.