i have series 1 and series 3 watches. I only wear the series 1 when I’m doing certain outside work that could scratch the face and also at night while my series 3 is charging. Both watches are properly paired to my iPhone and auto switching is turned on in the Watch app. My problem is that sometimes the activity (especially “stand”) doesn’t sync when I switch watches. This happens about half the time and the other half they do sync fine. Has anyone else experiencing this problem and have any solution to ensure the activity syncs when switching watches? Thanks.