Backup Exec does not automatically relabel imported media. The imported media's existing label is read and displayed in the Media view, in one of the Imported Media sets. Additionally, the imported media's original media label is displayed under the heading Media Description in the Results pane of the Media view. You can edit the media description in the media's property page to make it a more descriptive label.

If the media overwrite protection level is set to Partial or None, the imported media may be selected for a job and be overwritten. The imported media is automatically labeled when it is overwritten during a job.

If you want to label a specific imported media while maintaining full media overwrite protection for other imported media, erase the specific media and then label it.