What round-trips and what doesn't

JSON exports - prompts, AI templates, and full backups - can be imported back. XLSX and DOCX are read-only formats for sharing or printing and cannot be re-imported. On import, cards are matched by name so they update rather than duplicate.

Knowing which format round-trips tells you what to use for what: JSON to move work between machines or keep backups, a spreadsheet or document when the destination is a person rather than the app.