Additional Process Information 
The realignments take effect in the customer master and the material master, in the SD customer hierarchy or in the derivation rules in Profitability Analysis (CO-PA).
Once a realignment has been carried out, only the latest assignment is present in the information system and in planning. The original characteristic values (valid at the time of the particular posting) can only be displayed for the line items themselves. Given that the existing profitability segments are adapted to the new assignment, all the objects assigned to a profitability segment (such as sales orders or projects) and all existing R/3 documents (such as billing documents or financial accounting documents) are assigned to the CO-PA characteristics according to that new assignment.