On May 26, 2006, Disney officially closed Circle 7 Animation, and transferred about 80% of the studio's employees to Walt Disney Feature Animation, which was soon renamed Walt Disney Animation Studios. Catmull later disclosed in his 2014 book "Creativity, Inc." that although Pixar had been frustrated with Disney's decision to create Circle 7 Animation in order to create sequels to Pixar's own films, they did not hold that against Circle 7's employees, who had no part in that decision. This was why Catmull and Lasseter were willing to absorb most of the Circle 7 workforce directly into Walt Disney Animation Studios. Indeed, they eventually appointed Andrew Millstein, the former head of Circle 7, as the general manager of Walt Disney Animation Studios to handle day to day business affairs on their behalf.