Are you an administrator who needs to remove the list permanently? Read Delete a lead list after keeping any information you still need.
Open the list from the calling page.
Click the list's ••• menu.
Choose Export.
Find the CSV file in your browser downloads.

The file includes the lead status, notes, and custom information completed in Ubic.
Only lists imported from a CSV file can be exported. A list synchronized with a CRM remains managed in that CRM and cannot be downloaded from Ubic.