Garmin 735xt, just started using this watch again after brief previous use to use full time, connect showing run with no map or elevation & Strava showing it as a treadmill run with no map or elevation after pacing myself against a previous run already on the watch from same route, run straight after this again, just showed as it should do, what's gone wrong , how to correct this, is this something to do with pacing against the previous activity?