I finally used my forerunner 945 for the purpose I purchased it, to do an Ironman, but when I finished, the file got stuck saving.
The file never uploaded with a manual sync to a computer, but I was able to get a copy of the file off the watch using my computer. I have used all the fit file fixers online that I could find, but nothing seems to work quite right. I was able to get the swim uploaded to strava, but the bike and run are missing. Can anyone please help? The file is here - www.dropbox.com/.../2021-05-23-07-00-56[1].fit