If I got it right, you tried to swap numbered files from one game version to another. That's pretty dangerous because some game variables are stored not in numbered save files, but in config, common, and global files. That's why I said earlier that it will be easier to swap the entire save folder.
You're probably right, it's just that I'm not very experienced in this (file transfer, etc.), so I might have expressed myself incorrectly or misunderstood you. I first deleted and downloaded the game again, then tried to replace the save folder in it with my own, it did not help and the old saves did not appear. I had to create a new file save in the game and the numbering was the same as the old one. Then I just copied and pasted the previous saves into the current ones with file replacement, that is, file 6(2 minutes of the new game) to file 6(2.5 hours of the old one). In the game, it was displayed as if nothing had happened, but when I entered the save, the content that I needed was displayed.
You write that it's risky, I understand. But I had nothing to lose, besides, I duplicated the saves in a separate folder in advance, just in case. It's just that when replacing the saves folders, the game stupidly did not see the old saves, but saw the new ones. So I thought it was possible to replace the visible saves with the old ones that are not visible.
Somehow, I hope I explained it.
I'm not very good at English, so I used a translator, so I hope he was able to convey everything correctly. Thank you for your support and time, as a user of the game, I appreciate it. I wish you and your game success