I would really love to know what the odds of something like this happening. If you are one of those people that like to play with numbers feel free to have at it.
Let say you started playing on Server A. In BC, thanks to queue times, they started to offer server transfers off of server A. When the new wrath servers were started they added transfers to those start up servers and you took that free transfer to go to a less populated server, lets call it server B.
Now, since then you have played the game and made Server A your horde server with the characters you did leave behind and made server B your alliance server as you new home.
Now connected realms come many years later and Server A has been connected to Server B.
In a game with so many servers that has to be a long shot. But how would you feel if you were the person that ran away from a full server to, years later, be put back on it?