Hey I am using vegas pro 20. I have an mp4 with six audio tracks recorded in vmix. All the tracks show up in vegas but 1 and 2 show as stereo as do 5 and 6. 3 and 4 are kept separate. Why don't they all show as mono tracks?
There is (or was) a setting in "Options> Preferences> General" to import interleaved stereo events as L/R mono tracks.events. I do not know if it will help in this case though.