I noticed every time a ride is synced from Strava, The data points are incomplete but when I export the fit file from Strava and import it into intervals, there’s a lot more data. See the screenshots below from a test Zwift activity.
I’d like to know as well! For now, I’ve disabled auto syncing to Strava through HealthFit as I mostly record using my bikecomputer or other apps that directly sync to Strava. With the Watch, I do it manually.
I also disabled the HealthFit upload of activities to intervals. All my workouts end up on Strava anyway so I’m happy to use just Strava as a source for intervals. I had to disable my wahoo upload too cause it was duplicating workout imports.