Synthetic content for a Phase 9 pilot. Write concise release notes and migration guidance. This references a 2023 workflow and needs review in modern environments.

| Scope | Owner | Check | |---|---|---| | Search | Admin | Verify retention window | | Journeys | Owner | Verify audience filtering |

Audience: customer administrators, internal employees. Level target: INTRODUCTORY.

Pilot label: Phase 9 synthetic pilot data. Variant B: used for overlap coverage and deterministic reproduction.