Garmin Fenix 7 Pro - disappearing Hill Scores

I just realised that on Connect, when I checked how my Endurance and Hill scores had improved (I did a Hill run today and one last week), I noticed all my Hill scores for this month had disappeared. There was none for today which was in bright sunny conditions. By the way the solar intensity was bright with 27 degrees C with clear blue skies, yet the watch showed just 1.5k after 2 hours in the sun. GF7P firmware  ver 20.22.