Ok then I assume you convert it back to .dds from png. I think there is a wiiu tool that does that.I discovered that the battle portraits and stock icons are saved in A8R8G8B8 format, which paint.net is capable of saving in. They inject perfectly fine, they just don't get extracted correctly, resulting in a file paint.net can't open. So I used an online tool to convert the extracted files into something I could open and then continued with my normal pipeline.