I have done this in the past with no problems what so ever. All I had to do was log on and make sure the info was the same on both accounts, just the info that you can update. IE, email address, mailing address etc. At leaste I am pretty sure that is all you have to do, because I was able to move several characters around with no problems at all. I honestly do not think they even check. I think they just say it to cover them selves. They just want your cash.