Hi! You'd have to be a little bit more specific. If you mean that you've moved save files over from another version of the game, then they don't show up because you either put them in the wrong save folder (if you have mods) or you only copied specific saves that the game doesn't know about yet. You need to either copy over all the files in the save folder, or overwrite existing save files that the game already know about. In the latter case, just start a new game, skip through the intro and save into a new slot. Then rename your old save file to that slot and overwrite the new save file.
If the issue is something else, please let us know!
Alternatively join our public Discord server so you can ask us and/or other players directly there: https://discord.gg/didgames