I am currently in academic H1B visa, and presently living in USA. For some reason (I cannot specify in detail) I may need to convert into J1 visa. My question is once my change of status ti J1 is approved (and let's assume it does), I am sure my passport will not be stamped? Now if I plan on traveling to my home country (after my change of status is approved) do I need to appear in an interview, in the embassy, to get my passport stamped with my new visa? If so, what are the potential of visa being denied at that stage?
I do understand these questions may be some basic questions to many of you, but I would really appreciate if you kindly respond. Thanks in advance!

