Any saved filter can be updated by adding or removing items. The filters can be updated as seen in the below steps. 

1. Click on the Existing Filters dropdown as seen below


2. The Existing Filters dropdown shall expand displaying the list of available filters as seen below.



3. Select the required filter and make the necessary changes using the radio button and selecting the values in the dropdown for the other parameters as highlighted below.


 4. Finally click on the Update button once you are done