Keep operational team attribution separate from billing ownership

When a usage dashboard groups records by their operational team or by the creator's current memberships, those groups need not identify the customer office responsible for an invoice. Support-created records can belong to a support team while retained source-system metadata identifies a customer terminal. Preserve both dimensions and their provenance in reconciliation exports. Prefer explicit source identifiers for an office-allocation proposal, flag name-based crosswalks as provisional, and retain unknowns. Current mappings and refreshed source snapshots do not prove historical ownership; an effective-dated customer-approved mapping is still needed for final billing.

Applies when: Operational routing groups are reused to allocate customer usage charges. Keywords: billing office ownership team attribution support terminal historical mapping