hello Mauro,
I have had the exact same problem and after speaking to IG i was pointed out that if you are using trailing stops on your program then the result will be different because apparently the back test doesn’t read the value for stop trailing.
i take this opportunity to ask a question myself, i have a simple program i wrote and used on paper trading, then started using on live account and works ok but stopped working on the demo account and gives me an error, “the trailing stop increment is below the minimum required. The minimum increment amount for this market is 10 amountperpoint”. in fact the increment is automatically set at 5 points and cannot be changed so i cannot figure out how to change it.
i contacted tech support gave them access to the code but had no answer.
thanks All for the support
Antonio