We are currently using the GARMIN_TRAINING format as basis for conversion. It seems like TAO has removed the download of this data in JSON format (likely on 2025-03-19).

There are currently four formats available: FIT, TCX, Suunto Guide and Zwift ZWO.

I'll have a stab at fixing this using either ZWO (Unrolls repeating steps) or FIT (Harder to parse).