回复:回复:www.immigration-law.com under
I remember that after 140 is cleared you can renew H-1B by 3-year increment if the reason is the visa number unaviability. The famous Yate memo may have answer to you
http://www.immigration-law.com/AC-21%20Memo%2005-12-05.pdf check it out
In adddition, if your previous company withdraw 140, you lose the priority date.