Regarding what I posted here and what @suzzlo found out:
https://forum.suunto.com/topic/3490/quantified-self-io-the-topic-for-qs-discussions/1370
I think it is only display problem, because when connected to other service, HR data and graph is shown. And also power data and graph (now it is missing). I can not remember if power graph was shown at imported fit files at any point in past…