Whichever order your Banque et Caisse d'Épargne de l'État statement prints its columns in, each one still has to land in the right place once it reaches a spreadsheet. Before you export, the engine maps every column it has extracted into the fields your ledger or package expects. Date, description, debit, credit and running balance are aligned to the correct slots. A standard mapping is applied first, so most transactions land in the right place on arrival. You can review the assignment column by column and adjust anything that does not suit your naming convention. The rest of the file stays untouched while you make that change. No column is left unmapped, so the export payload matches your import template from the first row to the last.
If your Banque et Caisse d'Épargne de l'État statement runs to several pages, uploading it starts the same layout detection Convert·Into applies to any statement document, page by page. A statement that runs several pages is treated as one continuous document, not as separate fragments. The engine stitches the transaction table across page breaks and keeps the running balance consistent from the top of the file to the closing figure printed at the end. The same set of checks applies whether the statement is a single page or a dozen. You verify the closing balance once, and every line in between has already been verified against it.