Protecting Saved Data Across Chunks and Entities

How Attached Data Persists

Data Anchor uses its own custom data management system rather than loader-specific systems like Forge Capabilities. This system allows dependent mods to attach persistent data directly to chunks, levels, entities, block entities, and players. For example, if a mod tracks custom attributes on a creature or unique states within a specific chunk, Data Anchor manages that data layer.

Best Practices for World Management

Because custom data is anchored to your world and its contents, you should follow standard safety precautions when managing your world saves:

1. Avoid removing Data Anchor from an active world save if you are still using mods that rely on it, as those mods will no longer be able to read their attached data.

2. Always exit your world cleanly via the game menu rather than force-closing the Minecraft window to allow world levels and chunk data to finish writing to disk.

3. Before updating mods that interact with chunk or block entity data, back up your world folder from your Minecraft directory to safeguard your attached progression.