I am working for a company A using H-1B, the expire date is Jan 2006. Recently I got another offer from company B. Company B also applied H-1B for me, and staring data is Oct 20. But now I changed my mind and want to continue working for company A. May I still work for company A after my second H-1B is valid? If not, what should I do? Transfer H-1B back to Company A? Many thanks.