Bip39 to private key https://edgargvkh682.theburnward.com/a-novice-s-overview-to-getting-a-bip39-mnemonic-expression Despite the fact that it makes use of BIP32 method you are able to continue to import BIP39 seeds into Electrum wallet. Also other than BIp32 There may be BIP44 Model which some wallet use for that era of seeds. BIP39 solves this by using https://bookmarkfriend.com/story20024306/bip39-blockchain-not-known-details-about-bip39-word-list-txt-https-linktr-ee-bip39