ontology.terminal.delimeter has unpredictable affects

The final "\" has undocumented behavior that is difficult to understand.
After 4 hours of debugging, we finally realized this property is in adapter.properties and is required "ON" for calls using get_term_info.
If the flag is "OFF" then get_code_info must include a final "\" even though the client is passing the results from a previous ONT call get_code_info.