I have deferred my admission to Fall 2014 after getting my visa stamped in July 2013. I now have a new I20 from the university with a new SEVIS ID. Will I need to stamp my F1 visa again since my F1 visa stamped last year includes old SEVIS ID? Will I have any issues at the immigration?
Not required. Have all the documentation available to show at port of entry showing proof of deferred admission.