After adding several synonyms to a keyword, i have noticed that they appear separately in the full keyword list. Their relationship to the original parent keyword remains within the keyword entry dialogue but i see the synonym as a separate keyword in the list. How do i stop this?
Are you exporting pics containing those synonyms back into the catalog or otherwise reimporting those pics into the catalog? If so, double-click the keyword in the Keyword List panel on the right and uncheck the option Export Synonyms. Synonyms get exported as top-level keywords. (There is no industry standard for recording synonyms in a file's metadata.)