Import video with 5.1 audio does not work

I import a 5.1 video in Nuendo or Cubase and I get only the stereo tracks.
The same video sound tracks Is ok with multichannels in wavelab or spectralayers…
Thank you

As a workaround, import them into Wavelab, and then you should be able to directly access the audio files in the project folder, import them into your Nuendo session.