Complex sentence: During the 2006-2007 television season, the show was aired on CBS's new block "KOL Secret Slumber Party on CBS" and previously was a part of the "KEWLopolis" cartoon lineup, which taking September 12,2009.
Split into simpler sentences: During the 2006-2007 television season, the show was aired on CBS's new block "KOL Secret Slumber Party on CBS". The program was a part of "KEWLopolis", which taking September 12,2009.