Not properly identifying 7.1 audio track

[foghat 65]

All my DTS HD Master 7.1 audio tracks are being identified as 5.1 tracks under Media Info on the Server. MBT actually identifies them as 5.1 as well. However, then I play the movie in MBT, my receiver clearly indicates a 7.1 track is playing.

 

I don't know if maybe things are getting confused and it is picking the DTS core?

 

Media info also identifies as 8 channel track (with 6 channel core).