Davros claimed that the planet Antalin had been terraformed to resemble Skaro and was destroyed in its place. A subterfuge to destroy Daleks aligned to Davros; both on Skaro (Antalin) and those that remained hidden within Dalek ranks on Skaro (original). Despite finding evidence of threat to Skaro via evidence found on 22nd century earth of Davros' mission to 1960s Earth and seeing the event via time-tracking equipment, the Dalek Prime allowed the destruction of Skaro to destroy Daleks allied to Davros. Dalek Prime also claimed that the Dalek/Movellan war (and indeed most of Dalek history before the destruction of "Skaro")
The Trial of Davros of the Davros character. The action takes place within the immediate continuity of the "Doctor Who" serial "Genesis Of The Daleks". As Davros' creations, the Daleks, prepare to kill him at the conclusion of that story he is removed from time by the Time Lords to be tried for his crimes. The case against him includes personal testimony and evidence of Dalek atrocities throughout the centuries. Ultimately it is revealed that the trial has been a ruse by Davros to create a time portal to Gallifrey, enabling his new Daleks to attack and exterminate the Time Lords. The play ends