Sorry I could have been more clear (I have explained my workflow a couple times in other threads and forget some people may not have read EVERY post here
)
I make my entire map (or as much as I can) without labels, icons, etc in gimp.
I then do a save as to a jpg.
I import that jpg into inkscape, select the image, then size the canvas to fit the jpg. I lock the background layer (where the image is), and create new layers for things like city labels, rivers, titles, etc. I use layer visibility to reveal only the layer I want, and export it from inkscape as a png.
In gimp I use Open as Layer to bring in that png for final compositing (drop shadows/glows, etc.)
If I want to change text, I flip to my inkscape file and modify it there then delete the existing layer and again us Open as Layer.
When I know I'll do this a lot (like in my recent woodcut map) I used a linked layer set of scripts for gimp I reference
here.
If there is interest, I can make a quick tut on it.
-Rob A>