I finally got the backtesting function on OV (got lot of help from Ken Dole getting the files onto my Mac). All is good except when I convert trades or make an adjustment the P/L is almost always way off when I covert the trade e.g., I adjust a butterfly and suddenly I´m down $10,000 after converting. Even when I enter the initial trade I´m immediately down a few $k (don´t have slippage on). It´s not the R column (all checked) and I have the "G/L to include previous G/L" ticked. Also tried moving time back and fore by half an hour to see if it was just a temporary mispricing. Anyone know how to sort this? Fortunately it´s never in my favour so if I can finish a trade with less than max loss I know it´s performed well.