thank you CoinEraser.
personally I think the same about exchange's wallet vs. old personal wallet, but I'm not sure.
So, that means I need to spend a lot of time to read all about this new wallets pluses and drawbacks on weekend.
BTW: other theme.
Only now (I know how slow am I

)
so, now I see that on coinmarketcap BTX rated only in BTC on graph (and in the same time they have BTX/ETH under 'markets').
What is the reason for this?
All other tokens/coins on the same CMC have ETH graphs (if it is applicable).