Importing data — Several files with the same columns become one table

Exports are often split up — one file per year, per region, per batch — with the same columns in each. Drop them all in together and RowFold treats them as what they are: more rows of the same thing. Files whose column headers match exactly are combined into a single sheet before anything is analysed, so you get one table rather than one per file. The upload list says so — “3 files combined — identical columns, so they become one table” — and the row count is the total across all of them, so you can check it before going any further. A file whose columns differ, even slightly, stays separate and becomes its own table. Matching is on the full set of headers, ignoring case and surrounding spaces. If you genuinely want identically-shaped files kept apart, import them one at a time.