Problem:

The linear features for the OpenRoads design must match the receiving styleset features of the MX model, if they do not match you will get 'W' strings in the resulting MX model.

Solution:

1. Set the feature definitions for the OpenRoads design, MXRoad.pss has been selected for this example. 
   
   
   
   
2. Create an MX Model and set the style set to match the feature definitions in OpenRoads.
   
   
   
   
   
   
3. On the Feature Definitions Toggle Bar set the receiving model, DESIGN for this example.
   
   
   
   
   
   
4. Create the OpenRoads Design using the feature definitions, Road Centreline is used for this example.
   
   
   
   
5. Select the Export to Native tool and select the element/elements to export.
   
   
   
   
   
   
6. If you check the MX Model Explorer you will see the strings have been exported and have been assigned the correct style set naming.