Which is amazingly incompetent, considering how it's something so basic and important, and what others devs have no problem with for the most part in their games.
As we all know, the structure of linear games is very different from sandbox games in this way. It is reasonable for users to expect save files to be compatible. As it was in the previous non-reconstructed version and the developers emphasized on it to the point where they sacrificed some things once or twice. But in the new version, due to some problems, this compatibility does not exist at least until the end of the season, and this event was predicted and announced from the beginning of construction.
The fact is that you can use the save files of the past. But due to the mandatory changes that are made in each version, these save files will cause errors that will certainly bring more dissatisfaction.
Currently, not much work can be done for this issue. If we don't want to play the game from the beginning, we have to wait until the end of the season.
Or use other people's save files. I personally do not like use save files. But I will definitely share a complete save file at the end of the season, when I am sure there will be no other changes.
I can't do this right now because my save files are from the beta test version, and it's also very messed up.