Want to know if the current L1 Visa is cancelled before stamping H1B Visa

USA H1B Visa
1

Hello Saurabh,

Currently I am working on L1 B visa in US , at the same time i also have H1B approved petition from 2010 quota - both visas are from same organisation.

My L1 - will expire on Oct 2013

H1 B petition would expire - Sep 2013

I need to know if i go for H1B stamping and if that gets rejected can i come back on current L1B visa.

or if the H1B stamping is put on hold, can i still come back on current L1 Visa.

Is there any rule that before providing approval for new visa consulate would cancel the current valid L1B visa.

Thanks.

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Has someone answered this question? I am in similar situation but i couldnt find an answer for this post. Please pass on the information if possible.