In older worlds with a Nether that has Mushrooms or blocks placed above the ceiling the chunks will be regenerated as new again.
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My world was generated in 2010 and is just over 300mb. What can I do to make it small enough to attach?Â
Thank you for your report!
However, this issue has been temporarily closed as Awaiting Response.
Do you have a backup of the world from an earlier version (before 1.14)? If so, please attach (or provide a download link of) the world here so we can reproduce the issue.
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