for example, in this case,
right now he has a new I-94.
if his H1B visa will expire on 11/20/2007,
and his extension applicaion was submitted in July, 2007 , with the old I-94 number.
if his H1B got approved in the future,
which I-94 card is valid, the old or the new one?
the new number in new I-94 will be changed back to old one?
what can he do ?