@pbacot said:
I can't make sense of what this has to do with groups, but whenever I have worked on a component without opening it, e.g. scaling, it has only changed that particular instance. But as Dave has says there seem to be a number of requests to change this for Solid Tools and it should be achievable, as proved by Jim's plugin.
Peter, making other changes to components without opening them, Scaling them, for example, doesn't make any changes to the geometry inside. Although the Solid tools don't open the component for editing, they are making changes to the geometry within. This is more like editing a component to add or subtract geometry. It is reasonable to expect any tool which change the geometry within a component to make those changes to all instances of the component. Any other tool that modifies a component's geometry does that. The native Solid Tools are inconsistent in that regard.