I started a model, and set UV Texture layers up, thinking I was going to (just like with the materials) separate out the UVs into their own images. Later I figured out that I was to be doing this all on one Texture Layer and loading multiple images. Is there any way I can merge these UV Texture layers together, or at least to copy the UV coords from one layer to one of the others? Thank you for your help.
I decided to just manually move them over by creating UV Layout outputs and then realigning to them for each uv Group. It was about an hour of work but now looks good. Perhaps it is worth taking the time to write a script so that anyone having this issue will be covered next time. It just happened to be quicker to manually do it this time.