When you repartition data, the Data Vault can register the repartitioned data files for the original archived table. The Data Vault registers the repartitioned data files in the Data Vault repository for the original archived table and unregisters the original data files. The original data files become orphaned files.
You can keep or delete the orphaned files. You might want to keep the orphaned files to revert back to the original data files. For example, if you erroneously repartition the wrong table or you use an incorrect partition key. You might want to delete the orphan files after you verify that the repartitioning was successful to ensure that the Data Vault repository is consistent.