What Is Bip39 Passphrase Regardless that it utilizes BIP32 technique you'll be able to even now import BIP39 seeds into Electrum wallet. Also besides BIp32 There may be BIP44 Variation which some wallet use for that era of seeds. You could see the full supply code in standalone, offline html https://dftsocial.com/story19286560/what-is-a-seed-in-r-not-known-details-about-bip39-word-list