One needs to be in a valid nonimmigrant status for the employer to seek chance of status on his or her behalf. Waiting for a decision is not a valid nonimmigrant status.
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If L-1B is filed before 10/30 you may remain until it is adjudicated. If the B-1 is approved and gives you a status later than 10/30 then you need to file the L-1B before that date (but if you don't know by 10/30 then that is your deadline.)Ask a similar question
One must maintain a valid status to apply for any statutorily available chance of status on valid grounds to benefit from that while being in that unexpired status de facto.
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