Yes I agree and lots of us have had the same annoying occurrence.
Weird stuff happens that unless we worked in IT at IG we prob will never know why?
Is slippage a factor in your example … you will never know?
I’ve been manual trading a lot today and about 6 times when I clicked to Exit (both Long and Short) I got the message … ‘That Price is no longer available‘. As my Exit instruction was at Market Price then I can’t help thinking there are algorithms at work behind the scenes and in my case of not being able to Exit was due to a flash (milliseconds) widening of the spread or the minimum distance parameter or some other IG machination?? 🙁
In short … there isn’t always an answer (not visible to us anyway) and you may drive yourself bonkers trying to find an answer??
I just though of one thing though we had a while back, I worked on with one guy … the calculation of Indicators were not exactly the same on Backtest and AutoTrade / Forward Test.
Have you Graphed all your conditions? Ah, but of course you cannot GRAPH on Forward Test anyway so that trail dies there?? 🙁
I dont think its slippage in the cases I have looked at, but I can accept that could be a reason. In the backtest mode you can debug what is happening using the graph function and plot each variable/indicator at any point in time to validate what is happening. In the autotrade mode there is no way for one to see what is happening unless you are a developer and have access to the inside platform.
You mention that the calculation of indicators is different between Backtest and AutoTrade mode? Is this True, because if it is then this could be the reason for the differnce.
