I’ve been importing my Zwift .fit files into Golden Cheetah, which seemed to work well up until March 10th. From the following file, you can see that GC parses the file and displays the relevant data;
A few days later, I tried importing another file and while the import process recognized the duration and distance of the ride, the resultant activity log showed all the fields zero’d;
The only difference I can see is that the Device Type (top of screen) has changed from “Zwift” to “unknown”.
Thinking that the file may have got corrupted, I re-downloaded the file from my Zwift dashboard and it was exactly the same. I also used FitFileTools to change the type to Garmin-810, which again made no difference.
Noting that this precedes the mountain expansion update, I’m curious did Zwift recently change something in the FIT file construction code?