Yes I had 781 btcd and now I have 0. I checked the address it was sent to and I have never seen it before.
Sometimes, especially if you enabled "display coin control features" in your client, you sometimes get a random change address also created by your client when making transactions. But you still control it.
And it could be your client is staking so it shows no balance?
It would be very nice indeed if it turned out that it was only staking.