Restore from the game's own backup copy
Symptom
You want to roll a world back to one of the game's automatic copies.
Steps marked “changes files” delete, rename or overwrite something. Back up the whole save folder first.
Close the game (or stop the server) and copy the whole save folder first.
The game keeps numbered copies of each world (the world ID plus a suffix from
-1to-9) and a-indexfile. Mixing files from different dates can break the world, so restore complete sets.changes filesMove the current world file aside. Rename the matching backup by removing its suffix. Start the game and check the world.changes files
Check: The world loads with the older progress.
We found no official in-game restore button.changes files