Connectors: bring in a tool you already use — Running it again, and keeping it in sync (4)

A spreadsheet row has no id of its own, so Google Sheets and Excel match each row by its first column. Change a row's first cell and it arrives as a new record, with the old one left where it was. Rows that share a first-column value, or leave it blank, are matched by their order, and the run says how many there are. A source first imported before 22 September 2026 didn't record which table it made, so its next import makes one new table, says so, and updates that one from then on. Airtable attachments are copied when a record first arrives and left alone after that. Stop a sync any time; the tables are yours either way. To bring a CSV or a spreadsheet in instead, use the import wizard, which detects relations between files and can update an existing table by a match column.