I've tried a setup with custom config names and I've tried with the copies from the wiki:
https://community.bistudio.com/wiki/Arma_3:_Modded_Keybinding (Version from Oct. 9, 2021)
In the keybinding settings there will be a new category //"MODS"//, but with three entries:
- "Camera" (is default, shouldn't be here)
- "Editor Camera" (is default, shouldn't be here)
- "Mod Section" (the one created)
But the modded keybind //"My test action" (Mod_MyActionName )// will be under //"Editor Camera"//. The created entry //"Mod Section"// is empty.
The modded keybind (found under "Editor Camera") is working as intented. But all the other settings from //"Editor Camera"// are gone.
The //"Camera"// and //"Editor Camera"// settings are default settings. They just appear under //"MODS"// after adding the custom keybind. The default settings for //"Editor Camera"// are all gone and replaced by the custom keybind //"My test action" (Mod_MyActionName )//.