Empty result for /outbound/contactlists/<listID>/contacts/bulk

[joemorel]

When attempting to use the /outbound/contactlists/.../contacts/bulk API endpoint, we are always getting an empty array returned. Even through the API explorer:

But if we use the individual contact API endpoint:

/api/v2/outbound/contactlists/{contactListId}/contacts/{contactId}

We successfully are able to retrieve the contact...and the contactListId and contactId in question are identical. Any ideas?

[joemorel]

I was only allowed to attach one image, so here's a screenshot of the result from the second API call:

[tim.smith]

Please open a case with Genesys Cloud Care to investigate the missing data.