EDP allows you to edit previous session crossovers. It is used in the final sessions of events with qualifiers. EDP, in conjunction with CCO and PXOV, simplifies the calculations of carry overs and reduces the errors. As discussed in Multi-session games, if there is no qualification session, you can use EDXOV and XOV to transfer the player names and carry overs. However, if there is a qualifying session, you do not know which pairs are going to qualify; therefore you cannot assign seats. This assignment has to be done after the first session.
First, use EDPX and enter where the qualified pairs sat the first session. See XOV syntax for examples. Then, use PXOV to transfer the raw scores, names and masterpoints from the qualifying session. Finally, use CCO which calculates the carry overs by using the ACBL mathematical formula.