The disqus.changed.* namespace family is populated when an interaction represents an update. You can regard this namespace family as a change log.
This target holds the previous author_id prior to an update.
The updated author_id is available for filtering in the top-level disqus.author.id target.
- Filter for content about coffee from authors who have changed their id:
disqus.changed.author_id exists and disqus.message contains "coffee"
Target service: Disqus