The Continuity Trainspotter Strikes Again

I wonder if Rivesh Mantilax and Saruba Velak got home okay with their spaceship's mileometer missing? After all, it was still in Henry Van Statten's possession 57 years later. (The Roswell crash was also responsible for giving the world broadband, so Dalek informs us.)

Then again, it's possible that Dalek exists in a continuity parallel universe from the Tennant era, given that it's 2012 and no one knows what the "Metaltron" is, despite the planet having been absolutely swarming with Daleks by the end of the first decade of the 21st century, according to subsequent episodes. Or maybe Van Statten and his staff were all on that Spanish scuba diving holiday with Donna Noble?