Exporting from AE to premiere introduces a gainchange. If you use a fullscale sinwave it will sound fine before export. After export there is distortion. This is not cool since all CD tracks are fullscale and will have distortion afterwards.
It clearly a bug of some sort.
This bug will end up in the OMF exported from the premiere project and thus will the problem travel through postproduction. NOT very funny!
It would be easier to add the OMF export module to AE, or rather AAF export.
AAF export from Premiere is useless in Nuendo 6.5. It is strange that these companies do not talk to each other about this problem, please solve this.
If the audio already exists in Premiere -- which it may -- you wouldn't even need to include audio in your rendered file.
And if you're editing audio in AE, my advice is to pick another application. It stinks at it.