@chris49 , mine are syncing fine. You are using Suuntolink for that, right?
You can create new routes and POIs for Ambit (1,2,3) and Traverse watches with the help of the Suunto app and sync them to your watch via SuuntoLink.
https://www.suunto.com/en-gb/Support/faq-articles/transition/how-do-i-sync-routes-and-pois-to-the-watch-for-ambit-123-and-traverse/