# Same-buyer stem drift MM4293 → MM4298 → MM4297/-23 **Batch:** 81 **Buyer:** Imprint Knysna Quote revisions and client messages hop suffixes; tax invoice landed as MM4298-DALEEN-23 while subject stays MM4297-DALEEN-22. **Rule:** Rematch offline by buyer+SKU before inventing a new CRM stem. Reinforce SEDA/other stem-drift IA.