Some fields from my list have disappeared. Why?

Document ID : KB000071731
Last Modified Date : 01/03/2018
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Why my customized fields from the list view pages (Project list, Idea list...) disappears? Where are those customization saved?
These customizations are saved into CA PPM database. If they are missing, it could be due because the view has been Published. Publish a view will remove all per-user customizations for the view.

User-added image
Additional Information:
If there are missing fields and the view have not been Published, please contact CA Support.