What happens to self created scenarios when “reinstalling” a route from Steam?

To be more precise: If i remove the “haken” in the steam library and then put it in again so the route is redownloaded, will my self created scenarios dissapear?

Ok then. Thanks. My next question would be how to back up the scenarios?

I was thinking if it was possible just to back up the contents of the scenario folder and put them back after reinstallation.