I unwrapped my head in one UV map and the unwrapped head still appears in the map when I create a new UV map. How do I remove the head island from my new map? Is sliding it out of the image the only solution?
Sliding it out would not fix the problem. The image repeats. If you want to "remove" it, you could scale it down to 0 and put it in the corner or wherever you want. alternatively, you could assign it to a different material slot and not worry about the uv map, or separate it into a different object and have it as a different uv map entirely. Those are the only ways I see of fixing this.