I did log a mile on the treadmill. My Garmin 935 said I ran 2.13. No calibrate or save and calibrate option. Most of the support people were worthless. Come on Garmin. I spent a lot of money on this watch and it has many issues!
Yep it is a huge problem. I had to run 5 miles on the treadmill before I got that option. It makes my Tridot workout worthless when my Garmin 935 says I ran a 5 or 6 minute mile and I wasn't even close to that.
You can copy most of your settings and put them back. Especially helpful for activity screen setup