Shifting terrain in editor

Unity Engine
1

I’m creating some terrain using Unity’s built in terrain tool. Sometimes after making something, I change my mind about where things are located. I might want to move a grassy section a few meters to the right, or a mountain to another place.

Is there any tool out there to perform these “shifts” in the image maps? I suppose I could write something to shift the images myself, but I’d like to save some time.

2

I guess you could use a layred photoshop file as a displacement map

3

Yeah, I guess I could write something to export stuff into photoshop. Then I could change the images and reimport into Unity. This would work, but I was wondering if something more convenient already existed, that would perform all the shifting within Unity.