Upon rendering my video, Vegas Pro 17 did not include any changes I made to the audio clips in the timeline via Audio Event FX.
One thing I noticed is that when I render the portion of the video/audio clip that includes the Audio FX it seems to work... but when I render the entire 3 minute video for some reason it ignores it. This is definitely a bug.
What build of Vegas Pro 17 are you using? The latest is 452. Perhaps you could share your project so others could confirm?
Mines is updated to Build 452. Its a strange issue but I guess I understand what went wrong. I don't know the technical term for the yellow triangular icon you use to select which parts you want to render... but when I use that to select the entirety of the timeline, Vegas selectively neglects both visual and audio FXs. If I don't use that yellow selection tool, then it doesn't ignore it and renders everything.
Though, like I said earlier, if I render the portion of the video/audio clip that includes the Audio FX it seems to work.