Image map linking... redundant?

So I'm to the point of optimizing all the image maps for the soon-to-be-released TGB Adventure Kit tilepack, and I'm utilizing image map linking to help cut out any wasted space in these maps. But it seems like the small amount of space I'm saving may not be worth the clutter in the editor. By this I mean that if I physically break up one big image map into two in order to cut out a little wasted space, and I link those two image maps, I now have three image maps in the editor to dig through where I once had one. And each sprite in that original sheet now appears in the editor in two different places. Kinda cluttered and inefficient.

Is there a way to hide image maps from the editor so I can just have the one created by linking? Or am I just missing something fundemental about image map linking?