Paste Attributes adds attributes, does not overwrite

When I paste attributes on a clip that already has an effect (e.g. Lumetri) applied, the paste adds a 2nd instsance of the effect.  Then things start to look odd.  Sometimes you can't tell in the Effects Properties that there's a 2nd (or 3rd) instance of the effect if I'm trying to nail down a look between clips.

The Paste Attribute needs to have an "Overwrite Existing" option where it will replace an effect if it exists on the clip. That should be the default option.