Chunks from 1.17 don't upgrade properly to 1.20

Do you have a copy of the world from before it was opened in 1.20? If so, please attach it to the ticket. If it's too large to attach, you can upload it to a file-sharing site like OneDrive or Dropbox and share the download link.

Cleaning up old tickets: This ticket had been set to 'Awaiting Response', but has not received a response from the reporter (~3 months+) so is being closed as Incomplete. If you feel this is still a valid issue then please comment, or create a new ticket following the Issue Guidelines which includes steps to reproduce the problem.

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