L1 B Visa - I 94 related question

[bhanu55]

Hi All..,
I have a question related to I-94.
Some times we get I-94 date more than the Visa Expiry date and can stay in US till I-94 expiry date.
But I can't enter into US once after stepped out when you are on I-94.

My questions are:
Why is it so? what is the logic\theory behind giving extended date than my Visa date ?
If I stay longer period on I-94, does it going to have any negative impact on my next Visa ?
Someone told me that under some circumstances, the I-94 can be converted to Visa again. Is it really possible ?

Please let me know your thoughts in this area.

Regards

[immihelp]

You are getting I-94 date according to your L1 status (L1 petition validity) date.

Visa stamp is for entry into the US.

Therefore, assuming there is no mistake in issuing I-94 form, you should have no problem in staying in the US until the I-94 expiration date.