Hey Mark, I hope you are doing well today! If you are refering to users that are listed on the Import Tab under Directory > Directory Integrations > AD Instance > Import, they are not actually in the Okta Database at all. They are simply in 'temp space' waiting to be imported, and are not currently referencable via the API through any means.
Mark, can you expand on what you mean by "activating but not confirming"? I also have users in the temp space I'd like to get at via API. I can manually select the user from the GUI and "confirm assignments" but I assume you did something else? Thanks.