Bip39 buffer is not defined https://devinzryy552.trexgame.net/comprehending-bip32-vs-bip39-which-one-should-you-make-use-of Despite the fact that it works by using BIP32 technique you could nevertheless import BIP39 seeds into Electrum wallet. Also in addition to BIp32 there is BIP44 Model which some wallet use for the technology of seeds. This may explain to you vacant balances. https://lingeriebookmark.com/story10752273/bip39-word-list-how-many-words-not-known-details-about-bip39-generator-https-www-youtube-com-channel-ucupxfytj0fb78sq55hu6ocw