I noticed that the dashboard Gear gadget Total Distance and number of activities stays the same when I delete an activity.
i.e. I have duplicate entries for an activity, both with the same bike, 6 activities and 235.4km in total; I delete one activity and the Gear gadget still displays 6 activities and 235.4km in total; delete another duplicate activity with the same result. Clicking the "6 activities" link shows 4 activities.
Changing the gear from one bike to another adjusts the totals in both Gear gadgets. Deleting an activity doesn't.
Is there a method to have Garmin Connect re-scan the activities for gear to set the totals correctly to match the activities?