Keystone bip39 https://go.bubbl.us/ebe220/f17a?/Bookmarks Despite the fact that it takes advantage of BIP32 process you can continue to import BIP39 seeds into Electrum wallet. Also apart from BIp32 There may be BIP44 version which some wallet use for your era of seeds. This works mainly because BIP39 is supported by numerous https://blogfreely.net/travenmdoq/create-your-own-distinct-bip39-mnemonic-expression-with-python-scripts