It can backup/restore apps (including split APKs) with respective data and runtime permissions, system and Magisk data (including settings).
ZERO warranties, use at your own risk!
Install as a regular Magisk module (no reboot needed afterwards, though).
Alternatively, you can extract `system/bin/migrator` from the zip and run it as `sh filepath` (yes, no Magisk installation required).
The documentation is bundled.
Refer to `migrator --help` or `M -h`.
It can be exported to a file: `M -h > file`
If these executables aren't readily available (before a reboot), use `/dev/migrator` or `/dev/M`.