I think zBTC2 features brings lot of confusion and trouble to btc2 users, I suggest that you totally dismantle this program, I remembered one time my friend tried to explore this features and accidentally sent some of his btc2 tho this features, suddenly up until now he is waiting to retrieve his small btc2 amount that are transferred to zBTC2.
That feature can't be used now but it will be remade and so it will become much better. Meanwhile he can contact us to help convert it back to BTC2.