Data is not consolidating while exporting in Data Management

Summary:

Hi,

Trying to load the account data to another target account but data is not consolidating and showing the last record.

Content (required):

In the above file account and amount consolidated data should go to target account A4502002 but getting only last record 354.

Used explicit mapping DISTBB source value to target A4502002.

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):