I have a H1B visa stamping till Aug 2017 from my first employer. I changed my employer in July 2015 and they extented my visa till Aug 2018. So, I have visa valid until Aug 2018 (from my current employer) and visa stamp (with my previous employer name) expires in Aug 2017. If I have to travel to India and return to USA in july 2017. Should I still go for visa stamping?