Kinldy give me solid answers instead of guesses as this scenario is little complex. I hold a valid B1 visa for 10 yrs till 2015. I have my H1B approved and my consulate interview is on Feb 10th..if H1b is stamped will my B1 be still valid?? If valid can i travel on B1 business purpose for my current employer in India?? and later travel with H1B ??