I have scheduled my H1B Visa appointment already but I need to add my wife as her visa stamp is expired too. I called US embassy in India and they asked me to cancel my existing appointment and schedule new appointment. I need to fill out new DS-160 for my wife and pay the Visa fee for her (I already paid my fees). They said, when I schedule new appointment I can enter both receipt numbers for payment on that page which I didn't get it. If I schedule new appointment after cancelling my current, would it generate same CGI reference number so that they can relate both payments to same reference numbers?