The Lutron Rania have a little known feature which allows for more than one unit to be used to provide a scene feature as with the more expensive Grafik Eye units.
Also, both gangs will be controlled because they are both the same product address, this would happen with the Lutron remote as well.
Therefore I suggest you program the Rania's for different scenes which will mean that whilst both units will react to a button push, the units will do the pre-programmed function.
For example, I have two non B&O Rania's outside my bathroom and I have programmed the coloured buttons with one of 4 scenes. when I press the red button the two Ranias receive the same IR code from the Beo5, however one Rania turns the lights down to very dim and the other provides full brightness.
The downloaded XML file does not have the hardkey assigned, but you could add them if you wish.