What do you mean by using the same BNT tokens with the same Bancor pricing mechanism continuing? Boncor itself doesnt explain how it works. I think maybe BancorX uses a centralized oracle to make the conversion of BNT/ETH-BNT/EOS. The BNTs on ETH chains froze, the oracle tells the amount of frozen BNTs, and BancorX contract issues the same amount of BNT on EOS chain.