I am in the same boat, with fre*** I485 pending for almost "24 months" now, there are talks that our unit maybe shifted to a sister company, I already filed amended I-140 once as my previous company was acquired by the present company now this... thanks to the incompetent BCIS, my lawyer says it should not be a problem for I-485 application but BCIS 'MAY' ask for another amended I-140, I would call it scam as I already payed 2 times for the same process because delays and now I may pay for the 3 time.....then who knows another delay of 6-7 motnhs for the I-140 amendment......then possibly a 3rd FP and so the delay continues......
This whole process is f**** up... sorry for the language but there is absolutely NO-ONE to help us....