I got with using Mesh>Combine.
For whatever reason, my UV set has to be named UV1 in order for my game engine to read in the UVs.
So I rename the default UV set to UV1, no problems so far.
I got two objects however I wish to combine into a new object. Each object has their own UVs setup, and each object has had its default UVset renamed to UV1.
Now, when I combine the two meshes together, I end up with an empty UV set named map1 (which is now the new default UVset) and a uvset called UV1 which contains all the UVs.
My question is, is there some trick I could pull off in Mel to combine the objects and get around unwanted creation of a new default Uvset?