I was busted as I fouled up an order - I traded cable short and made a little only to realise after the event, that like CMC, the stop order stays in the market!
So I left the account for a couple of days expecting to put on a trade and when I logged in tha balance was at £5.57 - I called to ask where the funds had gone and they told me I had instigated a long trade in cable. Denied it etc then they reminded me that stops are left in the market if you sell or buy at market (ie not cancelled)
Guess this is what comes of trading with IG for years - best SB company in my eyes!