There are no specific requests or responses involved. Our application created some tailored audiences via the Ads API and used the TON API to upload hashed IDs to those audiences. We were able to see the audiences in the Web UI for a while. But then, at some point later, for no reason that we know of, they disappeared from the UI. We used the Ads API to look up the audience using it’s ID and set the with_deleted parameter to true, we can see that the audience is still known to Twitter, but it has been marked as deleted. We’re looking for any possible explanations why this might have happened, since we do not believe that our application ever deletes audiences.