Attachment Binding - default values not updating related Term in Team Server

I have created an EDD and added an attachement binding for a custom attribute that I would like to include in the Terms in Team Server.  The default value is applied to the model within Data Architect, and I can see the attachment at the entity and column level. 

In Team Server I have added the EDD attachement under the Managed Attributes section.

When I look at the ER Objects I can see the attachment, but the custom attribute has not been updated.  When I look at the Terms I can see the custom attribute but it has not been populated. 

Am I missing a step to associate the attachment binding with a custom attribute?