Summary: I went for a ride with navigation enabled. Mid-ride I changed navigation to a different route. From that point on, no new data was recorded in the FIT file even though the display kept pretending that recording was on. In the history's activity list, the activity is shown as having 122 km, which is correct, but the map contains only the first 56 km. The rest of the ride was not recorded. I have double checked with different tools, the data is really missing. The file size also points to a recording of 2 hours and a half instead of the actual more than 5 hours.
Here are the actions I did on my device:
- At the start of the ride:
- Turned the device on
- Went to Navigation > Courses > Saved Courses > My ride's course
- Tapped "Ride"
- Answered no to "Navigate to the beginning of the course?"
- Manually started the recording by pressing the start/stop button
- Mid rid:
- Went to Navigation > Courses > Saved Courses > A short segment course
- Tapped "Ride"
- Answered yes to "This will replace your current route?"
- Answered no to "Navigate to the beginning of the course?"
- At the end of the ride:
- Manually stopped the recording by pressing the start/stop button
- Tapped "Save Ride"
To be 100% accurate, I actually changed the navigation twice more after the first time but since recording stopped after the first change, I don't think this matters.
During the whole ride the display was pretending that recording was on. It correctly updated the distance and time. At the end of the ride, there were 122 km in a bit more than 5 hours. This is also what is shown in the history's activity list. However the map only shows the first 56 km. The elevation same thing: it show the elevation for the first half of the ride and then just nothing for the second half. The summary display "Invalid" left and right just below the "Summary" title and shows a single item: "Time 1193:02:47", which is completely bogus.
It's the first time that the device fails to record part of a ride. However, I think that it's not the first time that I change navigation mid-rid but I'm not 100% sure. So far, I haven't tried to reproduce the bug.
