First off, let me state... "you CRAZAH!" that's a lot of characters... the kind of number that makes vet players like me that haven't gotten to that number... feel very inadequate. obviously your a veteran player... you have a titan key in the lower 100s... so no disrespect intended.
I'll take a look it real quick... it's jQuery saving params to the database.. it's a little hard to predict how it's going to act sometimes.
A cool side note you might like to know having so many characters... if you hold down CTRL on you keyboard and click multiple fields... it does a multi-sort.
So, like I just went to your page, held down CTRL clicked Name and Server and it put all the characters in alphabetical order by server, THAN be character... probably works a bit backwards but I'm sure you'll find some use out of it.
Not 100% sure that sort saves correctly though. Don't think Suckerpunch knew the script did that when he designed it.