DAMMIT! I just tried to test the Any2Any to see what the price would be and it sold my damn cryptos! No warning. DO NOT HIT "CONVERT" UNLESS YOU WANT TO MAKE THE TRADE! It will not ask you for a gut check.
It appears to be like shapeshift.
Hopefully you did not lose much - sorry to hear.
I had 10 STEEM and I wanted to see how many Bata I could get for them. So I put in the 10 STEEM, changed the other box to Bata, but it was blank. So I hit "convert" to see how much it would be and it SOLD my STEEM and bought like 48 Bata. No gut check question advising me this was a transaction. It would have converted to more Bata but I guess there were only about 48 at that certain price (.00001615 BTC). I guess the difference was deposited as BTC (I hope, but I cannot verify). Not a bad price for Bata, but I wanted to hang on to that STEEM out of curiosity.
So I tried to email Bittrex and the email link on their website didn't work. Not sure if it something on my end. I went into my emails from Bittrex and tried to use that link but it didn't work either. So I tweeted them. I explained that there was no gut check on the Any2Any. They replied asking me to explain the gut check term. I replied kindly and explained to them. They said they will be releasing a bug fix tonight that will make the trades more reliable. I hope that fixes the problem.
Good that you got in contact with Bittrex as your feedback will make the service better.