Editing and re-saving a time trial changes the selected difficulty one step harder. Selecting Easy (24) in editor turns to Medium (37) in game. Medium turns to Hard (62) Hard to Very Hard (87) Very Hard to Unknown (112) The race.json must be edited to change it back. Other than that the race/path tool feels convenient and easy to use.
Thanks! Another issue: Sometimes segments do not get automatically created between path nodes, and trying to run this kind of race.json may cause a STATIC BUFFER OVERRUN 000...49 crash. The Race/Path Editor said there were "No issues!" when I saved this segment lacking file, so I suggest adding a segment check and an issue warning for it .