I've always stood by the principle that a computer should never "correct" human input without asking and this is a great example of that. There should be a prom

I've always stood by the principle that a computer should never "correct" human input without asking and this is a great example of that. There should be a prompt asking if you want to convert the data, and there should always remain a way to undo "corrections," but it should never happen without the user knowing about it or wanting it to happen.