I would agree with you, you just want the same deal as your ex co-workers, which sounds logical. On the other hand, new bosses (companies) make for new deals. But in your case, it's not even an entirely different and new company that took over so I believe it should be possible for them to give you the same deal. (also depending a bit on how long ago it was of course - situations change over time and as we all know by now, times are tough)