Artoards : Isolate

It would be great, if we could isolate artboards (like in illustrator), so that "generative fill" (and other things) would not try to take the other artboards into account. Right now i generate a smartobject for the background - but since this then has to fit into the different artboards, there is a lot of moving around involved whenever i change this background. Oh - and of course i'm open to other ideas concerning this issue 😉