If your PrimalGameData_Child has information in the “Mod Name” and “Mod Description” lines and it isn’t appearing in game, that means your PrimalGameData is not loading properly. I’ve noticed that after certain major releases, mods stop working because the PrimalGameData bugs out (mine have done this). The only way I’ve found to “fix” it, is to go into PrimalEarth, locate PrimalGameData, and drag it to your mod folder and create a new child, then readd everything. I’ve noticed that mods that break new engrams have to do this.