Dear all, I have been working on H1B and my 6 year cap is already over. My I140 was approved in Apr 2011. However, I dont have the copy of the approval notice. I just have the case number with me. From various forums, what I came to know is that I can take the USCIS screenshot to do the H1B transfer and request my I140 approval copy through FOIA. However, it is not clear if I can retain the priority date when it is time to apply for GC. Here is the question that I don't have a definite answer: If I switch the employer without the I140 approval copy but with the case number alone, will I be able to port my PD in the future ? In all probability, my current employer will withdraw I140 as soon as I leave them. Thanks.