Well, the physics can work in link mode, You need to turn on the original file with mmd physics, and save. Then you have to linked these three collection to new file , and Library override The first ...
File "C:\Users\Gigabyte\AppData\Roaming\Blender Foundation\Blender\4.1\scripts\addons\mmd_uuunyaa_tools_init.py", line 60, in auto_load.init() File "C:\Users\Gigabyte ...