Column Definitions Tied to Domains Not Showing Up on Export to Excel

Our shop is converting models from v11 to v18.  

In v11, I'm able to export column definitions to Excel using the export macro 2.1.  The definitions of columns bound to a domain are exported to Excel when I run this macro.

I then open up this model in v18 and get the popup to allow ER/Studio to convert the model to the new version.  When I run the same macro, these definitions no longer show up on the export.

I verified the domain bindings were carried over after the conversion.  I even tried importing them again, but the definitions still do not show up on the export.  It's like conversion changed something and I'm not sure how to fix it.  

Has this happened to anyone before?