Color shift on re-import from PS (13.0.1) to LR (4.2), Windows.

Hi!
I've got strange subtle color shift from reds to yellows when I'm doing the following:
1) import my raw files as DNG into LR
2) edit them in LR
3) ctrl-E them to edit in PS
4) edit them in PS (just drawing a dot with the brush tool somewhere, so the file could be saved and re-imported to LR)
5) save (not "save as") them in PS which bring them back as tifs to LR
This final tif from PS has some color shift in comparison to the original DNG file. Nothing is edited in PS.
Furthermore:
- if I'll open to edit the resulted tif with the color shift in PS once again with the option to use LR adjustments, I'm getting color shift in PS
- if I'll open to edit the resulted tif with the color shift in PS once again with the option to open the original tif without LR adjustments, I'm getting correct color in PS, as in my original DNG
LR - ProPhotoRGB
PS - ProPhotoRGB
Thanks for any help and suggestions!

I can't explain why your results are slightly different than mine, but I think I know what is happening. The DNG you posted is very heavily clipped with RawDigger showing about 4Mpixels at 100% RGB. You can download RawDigger to see for yourself:
http://www.rawdigger.com/
I noticed you didn't apply any Basic panel settings, which is probably why there is such a large difference between the DNG and rendered TIFF images. LR4 PV2012 uses "image adaptive controls with fairly complex algorithms that interact from top-down:
Exposure>Contrast>Highlights>Shadows>Whites>Blacks
In other words the Exposure setting affects how all of the other controls beneath it will function. I agree that it shouldn't matter and that the rendered TIFF should match the raw file, but it looks like the PV2012 rendering engine fails with very heavily clipped images (i.e. large areas of 100% RGB in the raw file) and ‘0’ Exposure setting.
You can correct this by trying not to overexpose the image during the shoot. For the lighting in this DNG image a -.5EV to -1.0EV exposure bracket would get you closer to a full dynamic range image. You can always clip the highlights inside LR, so there's no need to heavily clip the original shot (especially with studio lighting).
For the model images you have now I would set LR's Exposure to -.5EV to -1.0EV (i.e. to adjust midtone exposure) and then adjust the other Basic panel setting in a top-down manner. Usually setting -Highlights = +Shadows works best for most images. Next adjust Whites to set your white clipping point (hold down Alt key) and Blacks for the black clipping point. Next tweak Exposure if the midtones are too dark or light and then lastly adjust contrast, which I use sparingly (i.e. ±25).
Here are the Basic Panel settings I used:
Exposure -0.50, Contrast 0, Highlights -50, Shadows +50, Whites 25, Blacks -45
I also adjusted Clarity to -25 to retain the high-key look.
With the above settings the DNG and Edit in PS TIFF histograms look identical on my system. The key is to adjust Exposure to set the midtones, which helps the PV2012 rendering algorithms to work properly. Please let me know if this works the same on your system.

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    x
    x
    x
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    you are discarding profile information information when pasting (and not Converting to the destination)...

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