So far in Decidim,

when clicking on a proposal component in the admin BO,
it's possible to export

1. the list of the proposals
2. the comments of all the proposals.

The same feature should be implemented for the debate component.

Columns of the debates export:

• id
• author_id
• title
• body
• (number of) comments
• published_at
• hidden
• url
• component/id

Columns of the debates comments export:

• id
• created_at
• body
• author/id
• alignment
• depth
• user_group/id
• user_group/name
• commentable_id
• commentable_type
• root_commentable_url