Ok Here I am putting what I said back again. I took it out because I did not want to get into an argument.

What makes a BIG difference in Backtests: SWAP is taken from the last signed-in account. Keep in mind that swaps change all the time. This also holds true for some other variables.

Solution: Don't sign in again, once you have your data stablished. This will give you consistent backtest with each other.

To confirm the above: Check the value of swaps by checking the currency's property. Two different places to do it. One is on "strategy builder" and the other from the "Market watch". Normally they are the same, but if you sign-in/out of different brokers then it is different. Make sure it is the same, so to run a backtest, sign-in to another broker with different swaps or just wait a 1 to 5 days and run the backtest again with the new swaps. Yes you will see.

Also Aaragorn: To keep your big data-> From the Menu Tools->Option->Chart and change the "Max Bars in History" to 9999999999 (mean all 9s). Next time you come back it will be 2147483647. It is ok, this is really the max, just easier to put 9s.