For example you receive the structural model and link it into your project, you can select all the structural grids and paste them back into your project.
you can also copy object that have parameters associated to them and paste them into your project and the parameters are then available to you, it's just like inserting the family itself!
We tried it with a door and wall and it pasted into the view and we can then manipulate the properties and parameters of the door and wall successfully!
Being able to copy clip objects from linked files is great!!!