We setup a regular sync between our IC instance and an external website for industry-specific content/context. Filtered URL's to be specific to the pages we wanted, but it still resulted in nearly 25k+ pages being ingested; many of them were repeats/duplicates.
Since then, we've attempted to delete/remove the source from the Knowledge center pages with no success. It appears to still be going through regular syncs of new content and never fully removes it. When asking Fin, they suggested it would require API intervention. Requesting assistance to have it fully removed.
