Migrate from Archicad 21
When you open an Archicad 21 project, you may find that the 2D attributes which you customized in your Stair Favorites have been reset to their built-in defaults.
These attributes (e.g. Break Mark, Walking Line, Numbering) are found in Stair Settings, under Floor Plan Display/Reflected Ceiling Plan.
As needed, open your Stair Favorite Settings and readjust the 2D attributes.