Thats what even i thought that such a transfer is not possible, but note the following in the petition:
Where asked if the person has been to US give SSN #, I94 details, address in US my employer has given N/A, if i had worked in US the SSN would have been filled in so there is no foul play even. (as it remains same even if one leaves US after working there, but i never worked, so N/A was given)
He chose change of employer and not new employment, and has clearly metioned my previous approval receipt number when asked if the beneficiatiary has any previous approval.
Besides check out the last para of this link http://newdelhi.usembassy.gov/visatempwork.html
its clearly mentioned that one can enter US on old visa and approved petition.
Let meknow your view's, i would not like to go to US if there is any fould play, that what i want to find out?