Unable to get custom entity references to work

followed these instructions:
http://svn.apache.org/viewvc/maven/doxia/site/src/site/fml/faq.fml?annotate=739143&pathrev=739143

to include these entity references:
http://kallisti.eoti.org/ambrosia/kallisti/trit.ent

included test case has 3 different examples:
1. using the character references defined in the trit.ent. Character references were removed from the table during site:site
2. using the character references by number. Character references were replaced with '?' during site:site
3. copied site generated test2 and added the character references in by hand. That is the only one that works.