Route Chaser: The Grade not showing completed routes

I have ridden the half of Power to the Tower after selecting it from the Route Chaser Challenge Menu and it was saved as „Mayan 8“ for some reason.

This was a major cluster%^ for an event challenge join, you shouldn’t have to click inside the challenge,… when did Zwift change this from other challenges and think this was a stellar idea?

The next day I have choose the route from all available routes for Watopia and it was saved correctly. And this time I finished it. While I was riding the route for the first time, it was correctly labeled. Just the save fit file seems to be wrong.