You can modify the destination of any assignment; however, you should be aware that any changes will affect the financial flow and the calculation results for the model.
To modify assignments:
From Task Areas, select Manage Allocations, then Assignments.
The Assignments screen is displayed.
Select the POV and Layer of the model that contains the assignment to be changed, then click the Go button
.Under Source, select the model stage and the dimension members' intersection that contains the source of the assignment.
Under Destination, select the destination member to be modified.
Double-click the destination member cell, and edit the assignment. Begin typing the new member name, and then select the member from the drop-down list.
to save the changes.