Last month at LAX I got through security with a small 300ml bottle of water. It wasn't intentional on my part. Had flown in from SYD and forgot to empty the bottle which I would refill in the RCC. There wasn't much more than 50ml in that bottle, but last time that happened at YYZ I was forced to go through security a second time or dump the bottle. Did TSA just miss the liquid or was it this new policy?