I registered for full time student with less than 9 credits. I filled equivalent full time form from registar's office but not OISS. I asked the coordinator in my department and she said that is enough. I already applied OPT and extended my graduation date and got my new I-20. There is no any problem and nobody told me I am out of status. Is there some problem for my current status or do I need back to OISS to get addmition again?