They recently changed their system with regard to addresses.
Previously i could select my shipping address from a list but i always had to manually type out the billing address every time i did an order.'
(billing addr is my home addr but i always get stuff shipped to work office)
But last time i placed an order that issue was fixed, it just knew my billing address for once.
![ThumbsUp :-+](https://www.eevblog.com/forum/Smileys/default/icon_smile_thumbsup.gif)
So its probably part of that change that caused them to ask you for an address.