On two long rides where my Garmin 830 recorded data at 3 sec intervals and Intervals.icu identified that smart recording had been used, I am unable to “Add Interval (A)”. The noted button center wipes blue when press but no interval is added to the graphs. I have tried to add an interval using an iPhone, iPad and Dell laptop always with the same result. Bug ?
Thats because you did the whole 100 miles in Z3 (by heart rate) and Intervals.icu made the whole activity one big interval. I deleted that one (‘D’) and added a couple to test.
Thanks David.