POST /api/v2/bulkexports/exportjobs returns 400 Bad Request when including transcript_data for webchat interactions in BYOC EU-West-1. The error message states ‘Invalid filter: transcript_data is not supported for channel_type webchat’. Standard audio exports work fine. We need this for legal discovery chain of custody. Is this a known limitation in the Recording API v2 or a bug? Operating in London timezone. Any workaround for extracting transcript metadata in bulk without manual API calls per interaction?