The Epicor response is parsed into an object before Cutova sees it, and Cutova re-serializes it to build the reply. In the optional TOON compression mode it restructures the rows into a columnar form to shrink the payload, and never drops a row. No result is written to the database, and there is no result cache.
File-download outputs apply to Function tools that are configured for them, never to a BAQ or a Business Object query. The bytes are written with private permissions under a server-side upload directory and recorded with a database row. The download link expires 15 minutes after it is issued (UPLOAD_TTL_SECONDS), after which it cannot be read. A cleanup that runs every 15 minutes then deletes the expired file and its row, in batches, so the file is gone within about a sweep of its link expiring.
Cutova records administrative, billing and grant actions. For operational history, configure Epicor auditing for the workflows your team uses.