Slightly odd one this. I’ve just completed and submitted the DS-160 form. But I then discovered that my previous visa in an old passport is still valid for a few more years (I didn’t realise it stayed valid when the passport expired). I have not booked an interview or paid any fees. I can't see a way to cancel the DS-160 form. Can I just ignore the DS-160 form, or will the fact that I submitted it create any problems?