Audio Hiss On Multitrack Mix

[#1]

I created a multitrack mix in Audition with a voice track and audio track and exported it to a wav file.  When I play the file in Audition it is crystal clear.  When I import that audio into Captivate 2019 there is a hiss on the music track.  I have tried using different background music tracks and I get the same result.  Sounds perfect in Audition but hisses in Captivate.

[#2]

I created a multitrack mix in Audition with a voice track and audio track and exported it to a wav file.  When I play the file in Audition it is crystal clear.  When I import that audio into Captivate 2019 there is a hiss on the music track.  I have tried using different background music tracks and I get the same result.  Sounds perfect in Audition but hisses in Captivate.