You'd want to delete a search for a contact ?
Step 1: Click on Contacts -> Active Contacts
Step 2: Search and click on the contact you want to remove the filter for. Click on the "Searches" tab, then click on the icon "" next to the filter you want to delete. Then click "Save".
However, we recommend not deleting the filters but instead choosing a "Cancelled/Successfully Processed" status instead the search. This will allow you to find past searches for your contact.
Note that only searches with a status of "In progress" will be considered in the matching process.