7th year ext approved but not stamped.Can i travel to Canada

jeans_s

Registered Users (C)
My friend has his 7th year H1B extension approved and he got an interview date for May 12th.But he has to travel to Canada for personal reasons and will be back in 2 days.His presentH1b will expire only on May 28th 2006.Will it effect him when he goes for stamping to canada on May 11th , if he travels to canada and returns back to US next week without getting his 7TH year ext stamped .Pls help.Its urgent
 
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