The Garmin connect calendar "Weekly Totals" do not update when activities are disabled. For example, if I disable all activities except Running, I would expect Total Distance, Time and Calories to be Running totals, but it isn't, the total includes disabled activities: Swimming, Cycling etc.
You have to use the filter on the last row of the Calendar for an impact on the totals. The left hand side tick boxes are only for what is displayed in the daily boxes.
My totals graphs are all scrunched up and completely unusable since the last update.