I’m seeing duplication of data after adding suunto as a connection. Sometimes it’s double counted and others triple counted. Where triple counted it appears to show links to suunto, sports tracker and Strava.
Ack. I have poked around in the logs and cannot figure out how all those dups came about. You can delete them using the activity list view. Filter for activity source “Suunto” and make sure it is sorted by date. Then it is easy to tick the dups and do Edit → Delete. Sorry for the hassle.