Most automations select records using their configured view and input/output values. By default, they skip records with existing data in the output field. Some workflows, including Sync Airtable Record Comments into a Field, also save progress checkpoints so interrupted work can resume.

To reprocess records with existing output values, follow the instructions to overwrite existing data.

If you're using the 'Convert URLs to Attachments' automation, a changed source URL does not automatically replace an attachment already in the output field. To download it again, follow the overwrite instructions linked above.