Purge import batches to permanently remove all records in the batch from the import interface tables, as well as internal tables such as staging and error tables. You can purge any batch, imported or not, except those that have preimport processes or the import process running.
You usually purge batches:
After a satisfactory number of records are successfully imported into the TCA Registry from that batch.
If the batch is rejected and you do not plan to import that set of data using another import batch.
Purging the interface tables improves import performance. To archive imported data, you should copy the data to a set of custom tables.
Purged batches are no longer active, and you can view them only on the Batch Import History page. To search for purged batches, see: Searching for Import Batches.
You can also view details of purged batches that were not rejected. See: Viewing and Updating Import Batch Details.