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MCPE-170755

Chunk error updating old save file to new version

I upgraded a save to the new version, everything worked fine at first, but when I ran to the unloaded terrain, it loaded the new version of the terrain, when I got close, it had collision boxes, but no particles when destroying blocks.After a few moments, the new version of the terrain remove and restore the old version terrain.And when the new version of the terrain remove and restore the old version terrain,the game lags.

By the way, the old version terrain means the old version terrain that the player has been on

How to reprodunce:

  1. Download the archive I provided below and import it into Minecraft Preview

  2. Open the game and play a save called "BugWorld"

  3. Move further away

Expected Results:Terrain will display normally, and do a perfect connection to the old version of the terrain

Observed Results:The new terrain is displayed at a distance from the player, then suddenly removed and replaced with the old one

Note

1.This Bug does not appear in the latest version 1.19.83

2.I do not use any add-ons.

3.This bug will only appear when you upgrade your old Minecraft save to the latest Minecraft PreviewΒ 

I put onedrive link,it include videos,photos and save file

https://1drv.ms/f/s!AtgH2H8rIyVth2bXFCWzx1RokyUd?e=1LFMgT

and QrRXZAOtAQA= is save file

Seed:455

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[^JXS78`[email protected]]

David-Nornal

According to compare,the distant generated terrain is actually the seed's new terrain,and I reused this seed from the same version to generate a new world, and cut a picture of the same position. The difference in height and Angle caused the difference between the two pictures

[Mod] OcelotOnesie

Thank you for your report!
We're tracking this issue in MCPE-169059, so this ticket is being resolved and linked as a duplicate.

If you would like to add a vote and any extra information to the main ticket it would be appreciated.

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David-Nornal

(Unassigned)

Unconfirmed

Windows

Windows 11

1.20.0.25 Preview

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