When Using the Search Space CQL in the rest API, searches for archived spaces do not return results:

This will of course return results for non-archived spaces:

When searching for an archived space in the UI there is a includeArchivedSpaces=true flag:

This flag does is not documented in the REST API documentation and appears there is no endpoint parameter for it:

It would be useful to have this tag as a feature in the REST API for admin purposes to track archived spaces.