I imported all of my rides (4+ years worth) and there are hundreds of indoor Zwift rides, but they’re all labeled as “outside” rides… why is that and how do I change it?
They are “outside” because they were likely imported by Strava (or other similar source) and therefore not native TR inside workouts. As such, it appears just like an outside ride as if you’d pulled in a real one.
Pretty much any non-TR workout is “outside” per their definition. There is no real way to change it in the TR world.
If they have a distinct name you could use intervals.icu to batch change ride type