Apple health heartrate import from third partys (Strava, Garmin, ...)

Hello,

I recently switched to an Apple watch 7 and I really really like it. I see also Apple Health for me as the central storage for all my activitys I record with different applications or hardware.

Now to my problem:

Bike rides I do record with a cycling computer. The activity is showing in Apple Health but always without the heart rate graph. It makes no difference wheater the data is uploaded direct from garmin connect to apple health or via Strava. Some average heart rate value is showing up in the fitness app which does not fit to the real avarage heart rate recorded with the heart rate strap.

My problem is that apps used for showing my training load like Athlytic calculate the exeration mainly by the heart rate "performance".

Which will not work correct with the availible data in health!

Is there another way to get the heart rate from a third party into apple health? I don´t know if this is working on the Wahoo side.

And no I will not record my (long) bike rides direct with my watch when I have a much better unit mounted on my bike exactly for that purpose :)

Thanks