Render Layer Setup hierarchy issue

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Hi,
Let's suppose I have three objects in a scene. I create a render layer and a collection, then I add all three objects in that collection.
Now I realize that I need to create a new group with two of these objects. As soon as I group them, the render layer shows a warning icon and both objects are missing from the collection. It seems that Maya cannot detect that the same two objects are now in a group and should be kept in the collection. Of course I could remove the missing objects and add them again manually, but this is a bit annoying when working with a complex layer setup.
Is there a way for Maya to automatically update this kind of hierarchy relationships within the renderlayers?
Grouping objects is a very basic operation and I think Maya should be able to update these changes automatically.
Thank you,