If the running balance on your Guaranty Trust Holding Company 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 statement document carries a printed closing balance at the bottom of each page. The engine reads that figure and uses it as a reference point for the entire file. It recomputes the running balance from the first transaction onward, comparing each line against the printed total. A row that causes the balance to stop adding up is flagged for review rather than causing the whole conversion to fail. That means you know exactly which transaction to check while the rest of the data is ready to export.
If the Guaranty Trust Holding Company statement you have is a scanned image or a phone photo instead of an exported file, that alone does not stop Convert·Into from reading the transaction table off it. Scanned and photographed statements go through optical character recognition before extraction begins. The running-balance check stays active throughout, so if the scan misreads a digit, the mismatch is caught immediately. You can correct the one problematic row and carry on without re-processing the rest of the document.
However your Guaranty Trust Holding Company statement lays out its columns, that layout is only useful to you once it is mapped correctly into the export. Column mapping is handled during export preparation. The engine aligns the detected columns to your chosen output format, placing the date, description, debit, credit and balance fields where they belong in Excel, CSV or QBO. You can review the mapping and adjust any assignment before the file is saved.