Export UV map with projected view material

Is it possible to export a UV map that already has a material applied to it from “projected view”?
I added a material to a fish from a picture, but I want to edit the material on the UV map in GIMP.

I would say yes !

In the UV/Image Editor, click on Menu : Image then choose “Save as” and open it in GIMP. Next, you’ll just have to reload the UV image in the Textures panel to obtain the new painted version.

Don’t hesitate to dig in here.