Last time, upgrading to the 21.xx firmware messed up all my custom data (even garmin pay and phone connection).
Now it is the turn of my routes! After 22.06 I lost some routes and gained new ones (yes gained 
). Basically some routes I deleted from the watch came back to life without even syncing and not one but multiple times. One was duplicated 3 times.
This is not exactly annoying but rather funny story to report... When will a SW update be smooth? I do not mean free of bugs in itself but really the simple act of updating.