Previous activity track always shown in the map

Hi,

sorry for the stupid question, I'm sure I changed something but I cannot figure it out how.

On my Fenix 6 PRO, when I start an activity (i.e. hiking, walking), in the map screen, I get (as soon as I click "start") a previous activity track (in a red line) with its start and stop point, and all the course between. Something like I am following, with navigation, a previous activity, but I have not chosen any.

I have tried all the Map settings, but with no success. How can I remove it? It's annoying because, if I repeat the same path, I do not know if the red line is from a previous activity or if it's the one I am doing now.

Thanks,

Bye