Fenix 5 Performance True Up from Edge 520 not updating TrainingLoad

I've started using Edge520 to track the outdoor cyckling part of my triathlon training.
As I understood Physio TrueUp my watch should update Traing Load (which is my most important parameter) based on what Edge520 send to GarminConnect; but that doesnt seem to happen.
I get the workout details shown on the watch, with hr and watt, if and tss score, etc.

Im using a powermeter (Powertap wheel) and a taxc heartrate monitor (As my garmin hrm went out of battery this easter).
Do I need to use the Garmin HRM band for this to work ?

Comments ?
  • I am still using edge 520 to this day and have the same problem ie training load (and other related stats) not considering my bike activities recorded with edge 520, only run and swim activities recorded with my fenix 6, even though edge activities are on my garmin profile… very frustrating… Perhaps this is just garmin pushing us to buy more uptodate devices… any official answer from garmin on this matter would be greatly appreciated.