L1 Stamping
This is what I was told:
" Visa stamping is not a necessity as long as you are in US, if your L1 has been filed for extension, then you should get your I-797 approval along with I-94 card valid for the duration of the renewed I-797". You are in Status & not out of Status.
There is no need to re-stamp the Visa but only if you travel then you will need VIsa to return back to US.
What I did ;After I got my extension, I sent passports, I-797, new I-94 & Dl-156/157 papers duly filled to the St. Louis office as I may need to travel to India, it's been close to 8 weeks now but have still not got it back.
Going to India & re-stamping I have heard many stories/rumors, one rumor said they take upto 12 to 17 weeks to re-stamp as there was recently a case of Fraud in L1 from some company in Mumbai. I am not sure about all this but what I said in 1st 2 paras is what I did based on my lawyers responses.
So if you are not travelling, dont bother to stamp, but only problem is if you dont have a stamp more than year old I beleive you have to travel back to India.
Hope this helps.. my 2 cents