There is a bug in setting symbols when exporting favorites to GPX:
Symbol of “Bikertreff” and “Pass” is “Blue Pin” (same as “POI”):
FavoritenTypenMeer.gpx (1,3 KB)
So after export and reimport they all have the category “POI”
This are my categories in Kurviger before export:
Edit: Same issue also in the app!