Hey @BO-DACIOUS,
Ah I see, I was thinking the main issue was going to be those altered files. I do agree and suggest that you should not alter files whenever possible if you are trying to achieve the most accurate look. I don’t use photoshop unfortunately, so I can’t give any advice, though I would instead suggest importing them separately in their original format if possible and restitching them together. However, if someone else in the community has had success with somehow managing to get the correct settings hopefully they see this thread.
As far as your materials go are the colors constantly shifting? Do you have RVTs set up? If something goes wrong there, like it’s been turned off for example, it can and will cause the materials to go haywire.
Would you mind sharing some screens of your new coloring issue?
We can definitely figure this thing out!