QBank has a powerful feature that allows you to perform batch updating on multiple assets at the same time. Simply select the assets you wish to process and click the edit button.
Instead of going to the metadata editing view for a single asset, a Multiple Edit dialog will appear:
By default, append mode will be selected, meaning that new metadata will be added to the field content. You may also choose "Overwrite", "Remove" or "Clear field". Overwriting will overwrite any existing metadata by the new field content. Removing will remove existing metadata and Clear field will empty the metadata field entirely.