Now that the links themselves have been mass-imported it would be useful to add their cable IDs:
See all the "VC link with no cable ID" in https://netbox.wikimedia.org/extras/reports/cables.Cables/
You can also see them by browsing each VC master (or spine): https://netbox.wikimedia.org/dcim/devices/1112/ and filtering the interfaces list by "vcp-"