1600 Burst coins missing while transferring from Poloniex to Bittrex site. I don't know whether it has been Stolen by Poloniex or Stolen by Bittrex, or the transactions of cryptocurrencies are not Safe or Genuine?
You can create a ticket on bittrex for help, there must be something wrong with the transaction , you have to find it out and solve it with poloniex and bittrex.