This forum has very helpful, crisp clear on the process which I followed on 26th April and completed in 60 minutes with new i-94 card. Documents to carry for L1A visa holders are: passport, i-129 (petition), empolyment verification letter, 3 paystubs latest, US govt issued id card. Best time is from 6:30 to 8 am. I am very thankful to Murthy forum for helping lot of guys.