Picture Disappears/Blank When Moved in Grasshopper

I am trying to render a stone box where the side panels are cut from a stone slab. I want to associated the box’s surfaces to the outlines I have on the slab so that I can drag the outlines around and see the box rendering update in real time (instead of retrimming and placing each of the pieces). Currently when I modify the picture in Grasshopper, the resulting picture is just a blank surface, even after baking. Is it possible to move/trim the picture in grasshopper while maintaining the original image?Image Move.3dm (11.5 MB)
TEST.gh (4.2 KB)