Bip39 buffer is not defined https://www.spreaker.com/podcast/palerioiwk--6670096 Even though it takes advantage of BIP32 process you may continue to import BIP39 seeds into Electrum wallet. Also besides BIp32 There exists BIP44 version which some wallet use for that era of seeds. Want to examine which wallets assist the BIP39 mnemonic recovery https://bookmark-nation.com/story20365548/bip39-word-list-trust-wallet-the-single-best-strategy-to-use-for-bip39-word-list-txt-https-www-youtube-com-channel-ucupxfytj0fb78sq55hu6ocw