the coinjoin wallet will take one seed and give you 4 address collections:

deposit_utxo mixing_utxo coinjoined_utxo busted_transactions

you send from jade->deposit

use the coinjoin tool to spend from deposit->mixing

Consolidate out of mixing->coinjoind

if anything goes awry, the utxo ends at busted

you might be able to restore the coinjoined_utxo address collection to your new hardware wallet, if you get your derivation path setup correctly. this would be helpful because you decrease anonymity if you spend more than one joined utxo at a time

somebody correct me if I'm wrong, plz