No results in the API for campaign criterions

Hi, I'm trying to retrieve campaign criterions using the API for CriterionType == Age, but for some reason, I'm getting a result indicating that there are none for a specific campaign.

I attempted to fetch the data using both:

• GetCampaignCriterionsByIds
• DownloadCampaignsByCampaignIds (Campaign Age Criterion)

I’m not receiving any errors, just an empty response like:

{ "CampaignCriterions": [], "PartialErrors": null }

However, when I go into the campaign settings in the UI, I get the impression that the campaign does have this targeting set: Could it be that I'm looking for this targeting in the wrong place and it actually doesn't exist, as the API is returning?