@brusa69 there seems to be more things lacking in the direct Suunto App to Apple Health transfer…
If you look at your HR curve, you will see very little data points on the one in the activity from SA, but probably the full samples from Strava.
Note that I say probably, because I never did Strava>Health imports, but I did re-import activities to Health via Rungap, and got the full HR samples…
I think I recall something about .fit files not being all formatted the same way, maybe there are some data labels or timestamp managing that induce those incorrect importss.