Load shows up for Zwift rides. Not sure why Xert can’t.
Because Garmin likes Zwift more than us at the moment. Keep on them about opening their system up like Strava does.
Unfortunately Garmin has only partnered with a few selected companies instead of opening their platform. For outdoor activities I guess this is okay, but for indoor activities you typically do not want to record with the Garmin device because you will then loose virtual routes, interval starts/stops, meta data etc.
Note however that Garmin doesn’t forward non Garmin recorded activities to third parties. So if you save your zwift ride to Garmin, we won’t receive it. Garmin also doesn’t include non-Garmin activities when you request all your stuff from them. Strava is a better place to keep your data (or here …we don’t prevent our users giving authorization to third parties to access their own data or make it cumbersome. Our download function includes all your data.)