Imagine I have an enormous mesh (millions of polygons) that has UVs and a color map. I'd like to retopo it to something more manageable and bake a normal map, but then I'd also like to transfer the texture, either using the existing UV map or a new one, whichever works best. In principle I think I understand how to do this, but the devil is usually in the details, so if anyone knows of a tutorial that covers these things in some depth or has some hands-on experience, I'd very much appreciate any info.

-- I'm not mad at you, just Westphalian.