Speaking about archives, you can restore or delete both archived insights and ideas.
Ideas:

You can restore or delete from the context menu:

Insights:

You can restore, delete one by one (context menu), or delete all.
Speaking about archives, you can restore or delete both archived insights and ideas.
Ideas:
You can restore or delete from the context menu:
Insights:
You can restore, delete one by one (context menu), or delete all.