If the running balance on your REYL Group 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 row extracted from a statement document is checked arithmetically before you ever see the output. The engine reads the printed closing balance from the final page of the file, then steps back through every transaction in order and verifies that the running balance column stays consistent with the stated credits and debits. A line that does not add up is flagged for your review rather than silently accepted, so a single misread digit never propagates an error through the rest of the ledger.
When a REYL Group statement you need to convert spans more than one page, Convert·Into merges every page into a single transaction table rather than treating each page as its own file. When a statement runs across several pages, the extraction treats it as one continuous dataset, not as a set of disconnected tables stitched together at the end. Carried-forward balances are cross-checked at every page break, and the reconciliation logic holds the entire multi-page statement to the single closing figure printed at its conclusion. The export maintains the correct sort order regardless of page boundaries, so the resulting file matches the sequence you see in the original document.