If I downgrade a version, will it corrupt or reset my world?

Downgrading a Minecraft version is the risky direction, and it's worth understanding why before you do it. Minecraft worlds aren't backward-compatible, so opening one on an older version can go wrong.

Why downgrading is risky

Minecraft worlds aren't backward-compatible. Opening a world on an older version than it was last saved with may corrupt chunks or fail to load. Upgrading forward is generally safe; downgrading is the risky direction.

How to downgrade safely

Back up first — download your world folder via Files or SFTP (the panel's Backups tab is temporarily offline for an upgrade).
Then either:

Start fresh — tick Wipe Data when installing the older version in the Versions tab, or
Convert the world with a third-party tool before loading it on the older version.

Warning: Never point an older version at a world saved on a newer one without a backup — corruption can be permanent.

Frequently asked questions

Is upgrading forward safe? Generally yes — it's downgrading that's risky.

Can I keep my world when downgrading? Only by converting it with a third-party tool first; otherwise start fresh on the older version. Always back up beforehand.