What is bip39 passphrase https://www.storeboard.com/blogs/ai-for-small-business/browsing-the-globe-of-bitcoin-addresses-the-value-of-bip39/6240727 Regardless that it uses BIP32 approach you can still import BIP39 seeds into Electrum wallet. Also besides BIp32 You can find BIP44 Variation which some wallet use to the era of seeds. BIP39 solves this by using human-readable seed phrases ... https://modernbookmarks.com/story20389977/generate-bip39-passphrase-helping-the-others-realize-the-advantages-of-bip39-passphrase-https-cutt-ly-uryc5rw7