Constant MCO_COMPATIBILITY_UPGRADE_FRIEND_DESCRIPTION 

pub const MCO_COMPATIBILITY_UPGRADE_FRIEND_DESCRIPTION: &str = "mco.compatibility.upgrade.friend.description";

“This world was last played in version %s; you are on version %s.

A backup of the world will be saved under “World Backups”.

The owner of the Realm can restore the world if needed.“