Those profiles are only listed in Inner Space if WoW was auto-detected on your machine. Inner Space will copy your other config.wtf files when creating new Virtual Files, so if you're already using DX11, then DX11 will still be set in game. There is an in game setting where you can choose which API you'd like to use and this does not require an Inner Space game profile.

If you're hellbent on bringing that profile back then you need to create it yourself by adding a new game to Inner Space and then put '-d3d11' into the parameters box.