The Feature Defintion section of profile commands of which Michael speaks is used to override the symbology of the profile which is produced with the symbology defined in an alternate elemenet template.
So, what you should see is:
- If you profile a terrain model, the element template assigned in the profile section of terrain model feature defintion should control symbology.
- Unless you select an element template (IE not None) in the profile command. If you choose an element template here it will control symbology.
This element template override allows you to set different symbology than the feature defintion for special cases.