svoid fixConceptIDs(Concepts cc default db_mainConcepts()) {
  if (cc == null) ret;
  for (long id, Concept c : cc.concepts) {
    if (id == 0) continue with print("0 concept key: " + c);
    if (c.id == id) continue;
    print("Fixing concept ID: " + c.id + " => " + id + ": " + c);
    c.id = id;
  }
}