After I got my PhD in USA, I worked in a company with OPT for 10 months and H-1B for 1 year and 4 months. Then I stayed outside of USA for 1 year and 9 months. Then I came back to USA for another degree under F1 for 2 years. School said I would not have OPT anymore. Can I use my previous H-1B when I find a job? Or I have to apply for a new H-1B under cap starting 10/1 every year? If I can use my previous H1B, is it a reapply or a transfer? Do I just have the remaining time, 4 years and 8 months?