While Zwift is compatible with Stryd, Zwift does not record all of Stryd's advanced metrics in the activity file.
It is for this reason that you will need to upload the Zwift data and then offline sync your Stryd. Our algorithm is designed to merge the offline data into the watch data. You will see a complete data set in the post-run analysis screen in PowerCenter.
Please follow these steps:
1. Upload the Zwift data to your Stryd account
2. Once you see the Zwfit data, then offline sync your Stryd
3. Here is how: Offline Sync
Please email firstname.lastname@example.org with any other questions.