Data and Co files

Hi,

After performing Client Export Some files are creaed in Data and Co-files folder.

Can we delete this files after the Import porcees is completed.

Also the files still exist after the client is deleted can we delete the file after client delete.

Whenever a patch is imported files are created in USR\SAP\TRANS\EPS\IN folder do we need to keep this files after patch upgrade. In my development system there are no files in this folder and some patches were imported around 6 months back.

Thanks

Parvez Khan