Mashup dimensions should also be possible within a certain cube

It should be possible to do mashup dimensions within the same cube/data model.

Some very large cubes contain different versions of dimensions that are not necessarily linked to the same fact tables.

E.g. in our cubes provided by different vendors there are at least 4 examples of this, where mash-up within the same cube would be helpfull

When you try, you get this error message:

This cube is already represented with xxx do you want to replace it with yyy.