Use the newly uploaded refunds-v2.csv as a REPLACEMENT for refunds-v1.csv, never append both. It is the same synthetic source with one correction: refund R001 changes from 6000 to 8000 cents. Keep the same customers, order lines, snapshot, business rules and all exclusion rules. Preserve the v1 outputs. Recompute the v2 row/order/refund audits, full customer review and reconciliation; provide new downloadable CSVs with the same columns as the v1 files (customer_review.csv, order_checks.csv, order_line_checks.csv, refund_checks.csv, reconciliation.csv), clearly identified as v2. Independently compare all 1,000 customer rows with v1 and explain every changed material field and group-total movement. Add a saved insight titled 'Customer Segmentation — Refund Correction' with compact, readable tables for (1) source refund R001 and the before/after C0001 R/F/M/group, (2) before/after segment counts, orders and exact USD totals, (3) a four-row review for C0001, C0006, C0007, C0008 with R/F/M/history/group and next check. Preserve blank recency for no-history records. Include a fully refunded in-window purchase count in this compact review if supported by the accepted order/refund audits. Use exact cents, display two USD decimals in these compact tables and keep source evidence references. Do not change external accounts, campaigns or publish anything.