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+With the release of Minecraft 1.13, the storage format has been changed significantly, this results in lost items if a backpack created with an older version is opened with MC 1.13 (or newer).
+This page will describe you how to properly upgrade your backpacks to the new format.
+
+## Requirements:
+Minepacks V1.18 or newer (but not V2.x or newer)
+Bukkit/Spigot for MC 1.12.2 or older (only fully tested with 1.12.2)
+
+## Steps:
+1. Backup you database!!!
+1. Start your server
+1. Use the "/backpack rewrite" command (Permission: backpack.rewrite). The plugin will not be usable while the command is running. Depending on the amount of backpacks it might take some time to complete.
+1. Wait till it's done
+1. Stop the server
+1. Update to MC 1.13 or newer