Is there a better way to do it?

[HOTEC]

When I make a map for WitE2, I do the followings:
a) Zoom in the map to the largest;
b) Zoom out the map twice;
c) Ctrl PrtSc;
d) Create from clipboard in GIMP;
e) Crop the unwanted;
f) Save as a JPEG;
g) Move to next frame;
h) Repeat c) to g);
i) About 176 jpeg files made as such;
j) Open these files as layers in GIMP;
k) Join them by finding its common pixel;

As the designer likes to change things even the map, I have made the whole map 2 times already. Now, some areas are new for playable hexes to cope with the 2 new NSSs, some new ports etc.. When the scale has changed when it zooms out, merge by part becomes impracticable. Make the 3rd? My patience is run out.

Is there a better way to make a map for planning purposes?

[Wiedrock]

Make it once, then only replace changed screens in your Gimp file?!

[HOTEC]

They have changed the scale but not too much.
Any idea of the scale they used?
How do you control the scale?