Bip39 buffer is not defined https://list.ly/i/11078004 Despite the fact that it makes use of BIP32 technique you are able to still import BIP39 seeds into Electrum wallet. Also aside from BIp32 there is BIP44 Edition which some wallet use for the era of seeds. Want to check which wallets support https://userbookmark.com/story19805577/bip39-full-list-bip39-github-an-overview-https-dzen-ru-bip39-phrase-com