Import Transaction Data from an Information Provider Example 
Prerequisites
The target cube contains the Account, Category and Time dimensions.
The target data is aggregated prior to the copy process.
Process
The data imported from the information provider overwrites the records in the cube that have matching keys. The records in the post-import cube are affected (but the data from the information provider is not affected). If there are duplicate records in the data from the information provide, all the duplicate records are aggregated, using all of the dimensions as the key.
Post-Mapping Information Provider Data
ACTUAL,CASH,2006.JAN,500
ACTUAL,CASH,2006.JAN,200
ACTUAL,CASH,2006.FEB,200
Pre-Import Cube Data
ACTUAL,CASH,2006.FEB,100
ACTUAL,CASH,2006.JAN,200
ACTUAL,CASH,2006.APR,900
Result
Post-Import Cube Data
ACTUAL,CASH,2006.FEB,200
ACTUAL,CASH,2006.JAN,700
ACTUAL,CASH,2006.APR,900