{
"experimental_changes": 244,
"records_changed": 240,
"early_wgs_relabels": 14,
"historical_theme_relabels": 230,
"route_count_before": 6427,
"route_count_after": 6427,
"routes_removed": 290,
"routes_added": 290,
"aggregate_journey_signatures_before": 165,
"aggregate_journey_signatures_after": 185,
"journey_signatures_with_changed_counts": 39,
"governance": "Experimental branch only. Canonical 2,224 records remain unchanged."
}