Exporting stems does not retain sidechain compression.

On the latest and all, PC.  Noted that users from 4 years ago had a similar issue, so I wonder if it is user error or not.

Voiceover over music bed, sidechained using Dynamic Compression.  Sounds fine in Audition.  Exporting stems for work reasons results in un-compressed music bed.

Is there something special to do to preserve the sidechaining when mixing down to stems?