Can't change link group only in one artboard
I'm prototyping a desktop ribbon application. I've created the basic main screen artboard "Geral - ir para sede municipal":
Then duplicated it to artboard "Geral - abrir galeria de favoritos" as in the image bellow:
Whatever I change the "Galeria" group in one artboard, the change is beeing reflected in other artboards. I would like to change only the working artboart and let aother ones as they are. The image bellow shows my issue:
The portuguese stuff are just texts, hope it did not prejudice the undestanting.