Minecraft v1.15.2
Forge v31.2.31
Akashic Tome v1.3.13

I tried to add "document" to the accepted names in the config, but the config resets and erases any changes made to it when the game loads

If this is still relevant in the newest version, please open a new issue

I'm having the same problem. Amusingly, it appears to be doing this even with the default config, as the log file still has a Configuration file ...\config\akashictome-common.toml is not correct. Correcting line.

@WenXin20 I've submitted a PR to fix the issue, and if you want, I've uploaded a version built with the fix here.