I'm not sure if this is the right place to open this thread, but since I don't have permission for the mastering forum.
I have that problem with wavelab 6, when I play the extracted wave file it seems like everything I did stays in the program. I did a little test, I played the mastered file inside the wavelab and after that the extracted file with media player and there was a huge difference, the extracted from wavelab wave file sounds like the original file that I extracted from Reason without the wavelab mastering I did after.
Hope you can get what I'm trying to explain here
Any Ideas or suggestions?