I'm looking to expand my trading strategy from just FX to include commodities as well. I have no prior experience of backtesting on futures, and had a couple of questions. Which data provider is good for continuous futures, either back adjusted or otherwise. I need to go back at least 10 years with daily data. How do you interpret indicators which are acting on adjusted data? For example, if I'm looking for a cross of the 10 day MA above the 50 day MA, how do I calculate the longer MA if the highest volume contract only has a month to run? Basically what I'm looking for is assistance with backtesting mechanical systems on futures, if anyone can assist.