I logged in this morning and created a profile. Now it shows 6 different membership numbers (instead of just 2) for my account. Also, I couldn't see my AC even though I haven't redeemed it yet. Lastly, when I checked my exchange history, it was empty.
I tried calling Interval first thing this morning, but I got a recording saying call volume was larger than expected and to call back later. I instantly called back, got the same message, only I pressed 0 and got put into a call hold queue. After 25 minutes I got through.
The rep had no idea why 6 different account numbers were showing up, but she told me 4 of them were listed as "canceled" and they'd probably (hopefully) disappear on January 1st. As I was talking to her, I logged back into my II account, only this time it asked me which account I wanted to use, so I clicked on my old account number, and now I could see my AC and my exchange. (whew!) So everything looks good and I am a happy camper now.