Users are encountering an issue where the patched AP file after patching a Samsung Galaxy ROM using Magisk for Odin flashing no longer contains the userdata.img.lz4 file. This file is crucial for upgrades, particularly monthly security updates, as it preserves user data.
The issue seemingly started with Magisk version 26.4, as Magisk versions 26.1 and earlier included userdata.img.lz4 in the patched .tar file. This lack of the file can lead to data loss during upgrades. Users are advised to keep an eye on Magisk releases and potential workarounds for this bug.

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