I suppose this issue it’s the root cause because I can create a new interval manually, when I try, ( pressing A ) it appears, and it disappears immediately.
I see that activity got to Intervals.icu via RunGap. Do you mind trying to upload the fit file from Garmin Connect? I just want to see if anything is different. I tried to open your file on fiitfileview.com and it didn’t work and Garmin files usually do.
I think perhaps I may be understanding why (virtually) none of my workouts have laps by default in Intervals.icu. Laps are recorded on the device (Garmin watch or Wahoo computer) via the lap button. I have to manually Analyse Activity + checks on both options. Bike and Run have “Use laps for intervals” in Settings but only for Power. Since I have Training Load Priority set to “HR, Power, Pace” for both activities I’m guessing that the “Use laps” option doesn’t work with that load priority. Similarly, swim has no such “Use laps for intervals” and thus the lap button presses are (seemingly) ignored. FYI, my swim load priority is “Pace, HR, Power”, tho I have no idea how to get power in swimming.
Thanks. I figured this out. Somehow you managed to set threshold pace for swimming without any zones and that was breaking the analysis. The pace interval code now uses a default set of zones if none are defined but you should probably configure some.