Mixer "View Presets" questions

Are there a way to "update" your mixer view presets?
The only method I have found so far, is to delete the preset and then make a completly new preset. This will screw up the order in the list, and the Key Commands attached to them opens up different "views" after such an operation.
Is there another/better way?

When adding a track or bus, it always shows in all saved presets for your mixer view. Is this just the way it behaves, or are there another way to do this?