rushing a group and re-rushing another

[Auraqueen]

I rushed Chi Omega at my college back in September. I didn't get a bid, I just went to a few open rush events and hung out. Well, I realized they weren't for me and I think it was mutual because I didn't get an invitation to join. No big deal. Well, I am really interested in Alpha Chi Omega, and I hung out with a few of the sisters. They told me to come out to the house next semester and hang out, then go to an open rush party. I went to this school a few years ago, took time off and came back, but here is the thing- I pledged AXO back then and depledged because i was going to transfer and was having some issues that I didnt want to bring into the sorority. I really like AXO and always have and I want to join, but will the XO's think that is weird that I went from one group to the next and should I tell the AXO's that I had pledged them once before?None of the same sisters are there (i go to a small school and most pledge their 3rd year). I didn't want to be rude to the XO's and just stop going to their events, but then again, I never got a bid.I wasn't sure how I felt about AXO at the beginning and was friends with a few XO's that is why I checked them out. What should I do? I really want to go greek next term, and I dont know how groups talk within one another. So bottom line, should I tell the AXO's that I was once a pledge (i pledged for like 2 weeks and quit early on and it wasn't on bad terms). And should I tell them that I was thinking of joining XO but didn't because it was not a mutual fit? Help!