Hello, I have a question regarding my L1. I got an L1 Blanket from my employer in 2009 and got my visa stamped in chennai consulate. Now I am unable to find my I-797. My question is , in case of L1 Blanket, does the consulate officer keep the original I-797 at the time of interview or it is returned back to the employee? Could you guys tell based on your experience?