You can save all of the filter preferences in the Filter menu. For example, you can save the filter settings you select when accessing the Channel Editor from the Keyer, then load these back into any other module or soft effects editor. The Channel Editor is then filtered accordingly. You can only have one set of preferences, per user, and another for Batch. The saved preferences are persistent for the user when you restart the application.
The filter settings are saved for the current user, as filter preferences for all the modules, or for Batch, depending on from where you accessed the Channel Editor.
The filter settings are loaded, and the Channel Editor is filtered accordingly.