Is the Forward to PCB flag set as false? In which case this is to indicate it will not be going to layout. You can turn this off by setting the following in the DxDesigner.xml file
<key name="DISTINCT_STYLE_FOR_NON_FORWARD_PCB" value="0"/>
You will see some new options on the context menu for excluding parts from layout and/or Part Lister.
Watch the video here for other enhancements in VX.2 Design Creation
is there another option, for an optical indication for "Exclude from Partlist" components?