spoils mechanics question

So I'm in a long game with nuclear spoils. My question is: do the spoils that have been played get 'shuffled' back in immediately or do we go through all of them before the 'deck' gets reshuffled?
Conquer Club, a free online multiplayer variation of a popular world domination board game.
http://www.tools.conquerclub.com/forum/
http://www.tools.conquerclub.com/forum/viewtopic.php?f=6&t=176566