For completeness, no appeal by a keeper regarding Smart PCNs can require that the charge itself to be cancelled*, but they don't really understand or care and so they'll reply sating it has.
*- because the charge isn't the issue. The PCN doesn't even say they would seek to hold the keeper liable, they're telling you it's been incurred and asking you to pay or name the driver. That's it.
But send your appeal as is, it'll do the trick.