Unable to hide custom columns in Discussion Board

Question

I have added some custom fields to a Discussion Board list in SP 2013 that are populated using Workflow. I do not want these to appear in any of the create or edit item views.

I have marked the items as Hidden in the Settings: List Content Type but they are still showing in the NewForm.aspx and EditForm.aspx views.

Any ideas how to fix this?

UPDATE: Here is a view of what I have set the columns to in list content type;

And here is how it is being displayed despite marking them as Hidden;

Answer 1

Discussion board has two content type. Discussion and Message You need to mark them as hidden in 'Discussion' Content type of list if you do not those fields in form on 'New Discussion' and mark then hidden in 'Message' content type if you do not want then in message i.e reply of discussion.