Bid matching is so complicated!
If you get invited to Pref night by different groups then you are on their bid list and they want you.
However, don't get upset if you don't get offered a bid from your first pick. On my bid card I put one group down and didn't get a bid from them and got a bid from my second pick. However, I now know that Fate intervened and I fit in much more with the AOII girls then I ever did (or ever could) in my "first choice."
So don't be upset because it could work out even better than you think!