If you use an EA or Script to automatically place a trade on MT4 it does show up on their system I can see mine being mentioned on the right hand side of working orders on my statements. No mention of it at any other point so when the order comes in to their server sees it's an EA or script that has placed the order. So I guess they do have the ability to suppress them if they wanted to, but give credit where it's due I've run this script on live for 2 months and every order has been processed. I would spot it straight away because I run a local table of orders that monitor the prices levels and marks them as closed as if it was on a live platform so if my order report doesn't match theirs I'd investigate prices across other platforms first before I'd complain.