According to the post in http://communities.bentley.com/products/road___site_design/f/5922/p/90135/257063#257063 I should be able to link my legacy XIN file into our DGNLIB so that once it is done there any file that uses that DGNLIB should already have it linked in the feature definitions. However, I have done this and each time I create a new file I have had to relink it in that specific file. And I have already verified that in the UCF file that the CIVIL_XIN_FILE definition references the correct XIN file.
Thanks,
Neal