Smart Playlist Help

my previous thread over here has some reference:
http://forum.xbmc.org/showthread.php?tid=162806

I decided to post a new thread because this is not completely related.

I need some help, or just maybe and explanation why this is happening.

I have made 3 SmartPlaylists, each one targets a show, and displays one item, that is unwatched, sorted in ascending order. So basically what I have is a SP displaying the next episode that should be watched. The results is as follows:

666 Park Avenue.xps show 666.park.avenue.s01e06
Dexter.xps show dexter.s06e05
American Horror story show american.horror.story.s01e10

Now i wanted to make a playlist to get info from those 3 different playlists, so in my mind, it is suppose to show as follows
show 666.park.avenue.s01e06
dexter.s06e05
american.horror.story.s01e10

But it does not, instead it shows ALL the unwatched episodes from each playlist, i.e
666.park.avenue.s01e06
666.park.avenue.s01e07
666.park.avenue.s01e08
666.park.avenue.s01e09
666.park.avenue.s01e10
666.park.avenue.s01e11
666.park.avenue.s01e12
dexter.s06e05
dexter.s06e06
dexter.s06e07
dexter.s06e08
dexter.s06e09
dexter.s06e10
dexter.s06e11
dexter.s06e12
etc...

i have gone back to the original xps, and it shows only 1 episode, but as soon as i make a playlist containing that playlist, it shows all the episodes.