In admin interface (ezflow_site_admin)
- Copy the "Article" class. We'll have a new class called "Copy of Article"
- Click on Content structure tab
- Create a "News" folder
- Inside the "News" folder, create two objects:
#1 - "Article 1" - created from "Article" class
#2 - "Copy of Article 1" - created from "Copy of Article" class

In frontend (ezflow_site) (or ezdemo_site_admin in case of eZ Flow)
- Edit frontpage
- Add a block such "Main Story" or "2 items block" (in eZ Demo, we can use "Campaign" block)
- Add the "Article 1" object
- Publish
We can see that the article is presented in frontpage - ok

- Edit frontpage again
- Remove the "Article 1" object
- Add now the "Copy of Article 1" object
- Publish
We can see now that the "Copy of Article 1" is *not* presented in frontpage - This is not ok