Originally Posted by
KGambler
I have never experienced this issue quite the way you described it, but there is another way I sometimes wind up betting more than I intended...
Let's say you have an open order of GB +107... Then you decide to amend the order to GB +106... You better cancel that +107 order first. If you use the function which allows you to edit and resubmit the offer, sometimes someone will have come along and put in a large request on the other side (say ATL -106) in the meantime, and when you roll the +107 to +106 and hit resubmit, you wind up getting filled on BOTH the original and "new" order.