Photoshop :: Colorprofiles For Uncoated Paper

In my workflow I often use colourprofiles for uncoated paper such as Euroscale uncoated.Uncoated profiles causes a prewiew problem on screen, since colours are wiewed unnaturally desaturated. This makes it difficult to determine if photos needs to to be adjusted or not.
 
By convert photos to Euroscale Uncoated, and then assign Euroscale Coated profile on top of this, i get the best from both worlds:The uncoated profile gives me the wanted total ink, and the assigned coated profile gives a natural preview without changing the separation. It works perfekt and makes it easy to match colours on screen to colours on print.
 
Happiness lasted until I upgraded to CS6:Since the upgrade this workaround does not work. The problem is: When I assign a coated profile on top an uncoated profile, it changes the separation/colour numbers.In other words: the ink limit increases from 270% to more than 330%, which is way too much for the paper.
 
the problem occur in the moment RGB smart objects are used in the PSD file (which I love to do).If the PSD is a flat CMYK-file, the problem does not occur.
 
Is it any way to avoid this problem in CS6?For people like me, who every day struggles to get consistent colours on screen and on print, this is extremely important. The way it works in CS6 causes a lot of problems and extra work. I seriously consider to throw out CS6 and reinstall CS5.