If a transaction description on your NLB Komercijalna banka statement is long enough to wrap across two or three lines, it still needs to land in a single row once converted. Transaction descriptions that wrap across several lines can confuse extraction tools that expect one line per transaction. The engine reads the full text block, not just the first line, and reassembles the description into a single field so the narrative or payment reference stays intact.
If the running balance on your NLB Komercijalna banka statement does not add up row by row, that is exactly the kind of mismatch Convert·Into is built to catch rather than pass through silently. Every converted file is checked against the statement's own printed closing balance. The running balance is recalculated line by line from the opening figure; anything that does not add up is flagged for review rather than rejected wholesale. You see exactly which row broke the arithmetic, fix only that, and move on with a file that matches the source statement to the penny.