What if I’ve made a mistake?
A mistake (e.g., erasing data) can be rolled back if the project is in Production Mode – you can extract the data instrument from a previous data dictionary under Project Setup->data revision history
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Once a project is fully tested and ready to begin collecting real data, it is moved from development mode to production mode. The benefit of being in production mode is that it helps prevent users from making changes to their data collection instruments that might result in accidental data loss.
REDCap projects can continue to change structurally and grow as study needs change, but in production mode, some changes don’t take affect immediately, so users have a safety net to double check how the changes might affect saved data before committing them.