Mine disappeared too , but the motor stopped at the same time.
Blown no 2 fuse , traced to the bottom of the ignition switch hitting part of the wiring harness.
Pulled the harness over with a cable tie, one day I might find the chaffed wire and insulate it!
Years ago I experienced the same problem Roy had, bike stopped in mid-run and all electric was off. It was then "fixed" by putting in a new lock-set.
Of course that may have been overkill and the real reason never unearthed. But since then I had no recurrence.