(Starting a new thread for each issue I come across)
I've set my Athlete to allow auto-update of metrics including FTP. I did my first bike ride on Friday and it came up with a new FTP which was very low, as I know the watch needs to build up a bit of data to start giving accurate estimates, so I declined it. However, it seems to have ignored this and has changed my existing FTP in GC to this new value.
I also note there's no option to prevent auto-update of VO2Max so I've also "dropped" 3 units there - though that's an omission on the Fenix 5/5+ too.