Bip39 explained https://www.giantbomb.com/profile/blathayqvn/ Even though it utilizes BIP32 process it is possible to continue to import BIP39 seeds into Electrum wallet. Also in addition to BIp32 there is BIP44 Model which some wallet use for the era of seeds. Exactly how much security does a passphrase add? A BIP39 passphrase https://getsocialselling.com/story5461712/bip39-mnemonic-github-bip39-compatible-wallet-options-https-x-com-tundra838554