I did a hard effort on Tuesday and was surprised to see almost no watts recorded on my intervals activity:
https://intervals.icu/activities/i18818949
Looking at the original Garmin fit file, the power stream that intervals pulled was for a connect IQ field called “Average Power” which has the same 0 values across the activity except for a bit of power at the very beginning. Not sure why the average power was so wrong for this activity or why it’s even recorded as a Connect IQ field.
My raw power meter numbers look correct and this activity records fine on the Garmin side.
I tried changing the power stream used in Actions → Activity Settings but it only shows one stream available.
Any ideas?