Bip39 is not defined https://pastelink.net/caobqzis Even though it uses BIP32 system you'll be able to even now import BIP39 seeds into Electrum wallet. Also apart from BIp32 there is BIP44 Model which some wallet use for your generation of seeds. BIP39 solves this by using human-readable seed phrases made up https://hubwebsites.com/story22035504/bip39-bitcoin-core-not-known-details-about-bip39-generator-https-www-youtube-com-channel-ucupxfytj0fb78sq55hu6ocw