Thanks so much for your response.
I followed the instructions in the Blue Sky example and the assigned genres now appear correctly in the items_detail.php page.
The problem I have now is that when I view a record on the detail page and click on “update” from the detail page - only the Genres show up and all other information (item name, short description, long description, etc) is empty. After then clicking Update on the update page - it changes to the detail.php page with the information that the record has been removed.
This only happens if I try to update from the detail page. If I am on the result page and click on update = everything works fine.