[scribus] How to retain pure balck CMYK(0, 0, 0, 100) with color management activated

[Victor Papp]

Hi,

I faced with the following problem:
I have an RGB photo in my document, that without color management looks 
bad (like through fog)
When I turn on color management, its ok, but the texts that has pure 
black color CMYK(0,0,0,100) appears
on each CMYK process plate in print preview.

Is it possible to apply color management ONLY to images, but NOT to 
solid CMYK colors?

Is it possible NOT to apply ICC profiles for elements that uses pure black?

I am generating PS to be separated for offset printing and its not too 
good to print black from CMY plates.

Thanks in advance.
Victor