So you have slippage. I programmed the EAs in a way, so if slippage happens, to modify SL/TP after that. The idea is that if you want SL to be 100 pips from the open price, it's going to be 100 pips from the open price, even if the open price happens to be different that the price that was requested. If this happened, you would be able to see "modify" immediately after the trade is created.