How To Downgrade Minecraft 1.13 to 1.12.2 To Play On TreeCrafters - YouTube
Tutorial: How to get 1.13 oceans into your existing (1.7+) world : r/Minecraft
Should a 1.12 world be opened in 1.13 before upgrading to 1.14? - Survival Mode - Minecraft: Java Edition - Minecraft Forum - Minecraft Forum
World option: Force upgrade – Aternos
Bug Report] 1.13+ to 1.12.2 : Named items issue. · Issue #754 · Amulet-Team/Amulet-Map-Editor · GitHub
Matt Pryze (@oPryzeLP) / Twitter
Multipart guide] Converting your world from 1.12 to 1.13.1
MC-133942] 1.13 Release is called a snapshot when backing up world - Jira
Bug Report] 1.13+ to 1.12.2 : Named items issue. · Issue #754 · Amulet-Team/Amulet-Map-Editor · GitHub
GitHub - HakkaTjakka/Minecraft-1.12.2-Multiple-Worlds --floors--Vanilla-to-Cubic-Chunks-Conversion-Script: Convert multiple Minecraft 1.12.2 worlds (floors) to one single Cubic Chunks 1.12.2 format
What's New in Minecraft Java Edition 1.13.1? - YouTube
Support 1.12 and 1.13+ worlds in the same Chunky version · Issue #553 · chunky-dev/chunky · GitHub
How to correctly convert 1.12.2 world to 1.13 | SpigotMC - High Performance Minecraft
Aternos on Twitter: "Minecraft 1.13 was released and is available on Aternos now! ⬆ ⚠ But please use it with caution, especially if you want to keep using your 1.12.2 world. The
How do I convert a modded world from 1.12.2 into 1.16.3? - Mods Discussion - Minecraft Mods - Mapping and Modding: Java Edition - Minecraft Forum - Minecraft Forum
MC-134639] Worlds from 1.12.2 optimized to 1.13 gets dozens of chunks deleted - Jira
Minecraft 1.13 Update Opinion Thread - Recent Updates and Snapshots - Minecraft: Java Edition - Minecraft Forum - Minecraft Forum