Apart - obviously - TT, and Jtrader 'Reflector' that substituted months ago the DOME, which are the platforms that offer a Depth of the Market that keep the Bid/Ask Volume when you place an order on the DOM, i.e. when you move the cursor over the Bid/Ask columns? The latest TransACT implementation suffers of this issue while Ninjatrader 5 with TT gateway seems still good. Any other platform, please? Please specify the datafeed.