@smskeeter23
Technically, yes. There would be a way which I can't further talk about here.
Exactly, the data for each "course creator" generated track is part of a replay file. PD most probably just didn't think of exporting/importing that data to/from USB (like a savegame, or exporting Photo mode pictures) - or they actively refused to do so. Who knows..
If I recall correctly, they however allowed User courses to be uploaded and being shared back in the days when online services were still up and running.
The topic might be worth some more research... I think I might then be able to read the settings for each user generated track, like:
- this track has x sectors
- sector 1 has a complexity setting of y and a width of z and/or whatnot
Basically, showing all user inputted values for each track.
But, as I haven't looked into that up to now.. I'm not sure how the terrain data is created - especially if you're not satisfied with your track and create a new terrain with the other settings untouched. If it is based on pure random data, there would be no way to fully re-create old tracks even if you had all other settings for the track.
On the other side, if the terrain is not generated in a random way but follows a pattern (when creating a new terrain).. it might be possible to fully re-create tracks in game.
For example, if they have a set of let's say 50 pre-generated terrains and just shift throught them when you click on new, it would be very possible.
At a best guess (without going for a deep research yet), the terrain is randomly generated.
I'll have a look into it
*UPDATE*
I must admit, I totally forgot about that you can edit a previously generated course. Meaning, you can see all the settings for the course with in game methods already.
On the other side, when trying to create a complete new course, I wasn't able to re-create my test-candidate. Even when clicking 99 times on "New Track" to generate a new one (and the game then refused to create further new tracks).
Well, I think it depends on how old your kids are, and if they'd recognize that their "jump track" is looking a little bit different now. If you can convince them that it ever has looked this way, you might be good to go

On the other side, your game might have crashed bad while the kids were busy with something else and you would have had to reinstall it - while loosing the track data.. But that decision is up to you
