That’s the entire point, and the drawback, of Total Conversions. They replace the files the clients/server uses.
The PrimalGameData’s in the DevKit don’t contain the content of the 226.3(Live clients) PrimalGameData’s so they will not show up. This is why core-data mods and TC’s especially need to be updated with DevKit updates… it’s also why people constantly ***** on steam when a TC locks out content when they don’t realise that modders have no say, sway or power to do anything. We’re at the mercy of Wildcard and their release schedule.
-WM