My 935 is not recording sets in strength workouts. The workout summary, including total cal, total time, work time, and total sets, all seems correct. But then when I ask it to show me sets, it only displays a single set of whatever the last exercise was with the work/rest time for only that set. When I manually delete and upload the FIT file, I get the same result--it's not a sync issue, it's an issue with the FIT file.