Hi Lain, to make one single sculpt map instead of many you'll need to make one single big surface instead of many different surfaces.

That means for example merging segments of a curve together, (by using Edit/Show pts to turn on control points and deleting the point where 2 segments connect) so that you have longer single smooth segments instead of multi-segment curves when you do stuff like sweeps and other surfacing commands that use that curve.

If you could post an example file that you would like to have as one single sculpt map instead of many, it would help me to understand what you want to do.

- Michael