When upgrading your Tor relay, or moving it to a different computer, be sure to keep the same identity keys (stored in "keys/ed25519_master_id_secret_key" and "keys/secret_id_key" in your DataDirectory).
If you are a bridge operator, also make sure to keep pt_state/. It contains data required for your bridge to keep working with the same bridge line.
Para simplificar, basta con copiar todo el directorio de datos.
Es posible que desees mantener las copias de seguridad de estas claves de identidad, además de pt_state para un puente, por lo que puede restaurar el relé si algo va mal.