So, I was chatting using iMessage on my phone and on my computer. All of a sudden, my internet connection went down at home and it said "this person isn't registered with iMessage" for any message I tried to send. Internet came back up, same problem. I logged out of iMessage then back in again. Now I can send iMessages to some phone numbers and e-mail addresses, but not to others, and all of my previous chat history is wiped clean - with the exception of two conversations... I figured it'd sync up eventually, but it's not... Anyone know what's going on?