-snip-
Do you know maybe when creating new seed in Electrum if by chance I get all words that are BIP39 compatible (without "special" words unique for Electrum word list) can I recreate that seed on BIP39 wallet?
There's zero percent chance that it will be a valid BIP39 seed since Electrum is coded not to use a combination of words that has a valid BIP39 seed checksum.
For reference:
https://github.com/spesmilo/electrum/blob/a511ab8e78164bb1ed617a66b59d4cadfc46c501/electrum/mnemonic.py#L226-L229For the "
special words" those are only used to create the wallet's seed in the old versions,
It's only used for seed phrase backwards compatibility today. (
for recovery purposes only)