IndexKey and IndexEntry {instance, sequence}: the owner's watcher and the
tool runner's reindex write the same, so a reindex leaves the index as the
watcher keeps it (the lead's ruling on issue 1966 B1; ADR 0597 §4).
IndexKey and IndexEntry {instance, sequence}: the owner's watcher and the
tool runner's reindex write the same, so a reindex leaves the index as the
watcher keeps it (the lead's ruling on issue 1966 B1; ADR 0597 §4).