Old worlds of version 0.8 does not become infinite.This causes a crash the game.When you return to the game creates a copy of the old world and the world is not infinite
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is duplicated by 2
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I wonder why was it marked as Invalid?
Can confirm in Bedrock 1.20.0, for Windows 10. I've tried converting a couple ancient MCPE (Android) worlds of mine from v0.8.1 alpha, only succeeding to make an old world copy before crashing.
The whole sequence is as follows:
Copy or move the world's folder here: {{C:\Users\<your user name>\AppData\Local\Packages\Microsoft.MinecraftUWP_8wekyb3d8bbwe\LocalState\games\com.mojang\minecraftWorlds}}
In the game's main menu, click "Play". The game will recognize the newly added world, though will show a default map image as they didn't exist in v0.8.1 alpha.
Click "Edit". In the World Type entry, the map will be marked as "Old". Scroll all the way down until the "Make Infinite!" button appears.
Click "Make Infinite!" The game will crash soon, while at "Expanding world" stage.
Open the game again and click "Play". There will be a new world, a backup copy suffixed with "-Old". As expected, it will retain the original "Old" world type.
Clicking "Edit" next to the world supposedly processed with "Make Infinite!" reveals it still has "Old" world type.
Inspecting the world's folder reveals a changed
level.datfile together with its old version (both are larger in size) and a new "db" folder with only three files: a xxxxxx.log file, a MANIFEST-yyyyyy file (where xxxxxx and yyyyyy are some numbers) and a CURRENT file withMANIFEST-{_}yyyyyy{_} as its content. There are no xxxxxx.ldb files as present on a typical Bedrock world (at least on W10).
Even if not made infinite, the ancient worlds are unreliable to play on, with crashes happening quite soon after moving, but that's all for a different bug report (unless the underlying cause happens to be the same). Unfortunately, I have no old worlds from v0.9.0 alpha to test.
Thank you for your report!
Crashes such as these are now logged automatically, so will be investigated further by the development team internally.
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