How can I do cleanse my Job Alert subscription list?

How can I do cleanse my Job Alert subscription list?

You can EXPORT the job alert field from within the ACTION button at the bottom of the Candidate list.
This extracts the data into a CSV file. Make sure you export the Candidates ID at the same time. This allows you to cleanse the data in the CSV and use the IMPORT facility to IGNORE NEW AND UPDATE MATCHED using the Candidate’s ID as the matching field.