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Stale boundaries
TemporalAdmin/postal/DMA boundaries change; using an old vintage misassigns cells.
Detection
Boundary vintage older than the activity period.
Mitigation
- Version boundaries
- Record validFrom/validTo on every crosswalk
Affected conversions
- Admin polygonsH3 (max-overlap partition)
- Admin polygonsH3 (weighted crosswalk)
- H3platform-native IDs