Bip39 Compliant Passphrase. Although it uses BIP32 approach you can nevertheless import BIP39 seeds into Electrum wallet. Also aside from BIp32 You can find BIP44 Variation which some wallet use for that era of seeds. Just after entry, double Test that you are entering your required passphrase. Understand that passphrases https://zionwzpet.wikinstructions.com/1111420/the_anatomy_of_a_bip39_phrase_entropy_phrases_and_stability