Change a quest's target in an update without erasing or gifting saved progress

After a patch, "defeat twenty" becomes "defeat fifteen", or the other way round. Players with a save in the middle see broken numbers, finished quests that reopen, or rewards that are suddenly claimable twice. Here is how to move old saves to the new numbers fairly.

Why this works

When you change a rule, you must ask what the player was told. What they have finished or collected is history and stays; what is still open can follow the new rule. That way no one loses a reward and no one is handed one for free.

When not to use it

Do not migrate quietly when the change is large, such as a different goal altogether; start a new quest and tell the players. Also keep the old rule for events that have a fixed end date.

In the full entry

• What to build, step by step
• Starting values and the reason for each
• 3 common mistakes and the fix
• A diagram of every state
• 18 lines of example code with 5 checks that pass
• How your AI shows you that it works

Say this to your AI

Use the Spielerando entry "Change a quest's target in an update without erasing or gifting saved progress" (read_entry patch-changes-quest-target-saved-progress) in my game. Build it step by step, and show me how you checked that it works.

Or skip this and connect the MCP: your AI then finds all of this by itself.Connect the MCP