That is kind of mandatory with complex rigged-character groups, with hundreds of helper objects, and a few useful ones being hidden on specific layers (like e.g. the main rig...). It is especially critical point with static override, which won't allow to move objects between collections and such (that would be a nightmare to implement and handle). Note that this is rather basic implementation, we could go further and move all objects in all layers they are 'active', but that would probably be overkill. Reviewers: brecht Subscribers: brecht Differential Revision: https://developer.blender.org/D3649