Keep players' items when an update renames or removes an ingredient

A game update renames "oak plank" to "plank" and drops an old gem. Players who update must find all their things in the new names, and nothing may vanish silently. A player who opens an old save on a newer version, or a newer save on an older one, must not lose what the game does not know. This entry maps the old save to the new without losing anything.

Why this works

A saved bag is a promise that what the player owns stays theirs through every update. Following renames to the end, merging old names into one stack and keeping what you do not recognise protects that promise even for players who update late or never.

When not to use it

If you change what an item means rather than what it is called, a rename table is the wrong tool; a silent swap would hide a real balance change. Tell the player what changed, or compensate in a way they can see.

In the full entry

• What to build, step by step
• Starting values and the reason for each
• 3 common mistakes and the fix
• 28 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 "Keep players' items when an update renames or removes an ingredient" (read_entry mobile-save-renamed-items-migration) 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