New audio 5.1 error export

Everytime I export my audio in a Wav file and try to open it in sony vegas, nearly all the tracks are silent and blank except for one, and the whole track is shorter than it should be, I do not know why this is happening please help me figure this out because it is making me upset to no end.

When you re-open the 5.1 channel file in Audacity, what happens?

How big is the file? There is a 4GB limit, due to the 32-bit file-size field in the WAV header. You can exceed that with multi-channel “movie length” files. If that field rolls-over the file can appear “randomly” shorter than it is, but that doesn’t explain the silent tracks…