Asylum Incident

The Asylum Incident was the Time Lord designation for the event in which Parliament of the Daleks tasked the Eleventh Doctor with destroying the Dalek Asylum. The Dalek Combat Training Manual composed by the Time Lords, which dated other events down to the century, could not identify the temporal co-ordinates of this incident. (TV: Asylum of the Daleks, PROSE: Dalek Combat Training Manual)

Aftermath
The sudden deletion of all information concerning the Doctor from the Pathweb caused the Prime Minister of the Daleks to spend whole centuries scrutinising over the mystery of the Daleks' forgotten enemy, going insane in the process.

300 years into the Siege of Trenzalore, the Daleks regained their memories of the Doctor from the cadaver of Tasha Lem. Upon regaining these memories, the Prime Minister dashed itself against its glass case; the Supreme Dalek declared it unfit for service and exterminated the Prime Minister, becoming the new leader of the Parliament of the Daleks. (PROSE: Dalek: The Astounding Untold History of the Greatest Enemies of the Universe)