Graphic disappears when slicing/editing in Bambu Studio

Sorry if this is a duplicate post, I could not find the answer I was looking for.
I have a a multicolor gopher image I want to print on the side of an object, I selected the object and merger the parts, I then select the picture (with all its parts) and move it into the part I want it printed on. The picture and part will print face down. Now here is the issue. The picture simply disappears when I move into place. I am using bambu studio todo this. I have tried to move the z access of the part to 0.01 to maybe force some extrusion but this also does not work.
This is the view from the bottom.

Very crude sample of what I want.

How hard can this be? I have tried many things… I guess I dont even have to mention that I am new to this… I also tried youtube, I did not find my solution.
gopherzzz.3mf (961.5 KB)

is the z-axis you are setting referenced to the part or world coordinates?

Uhmmmm… Yeah not sure. Which should it be? I just added the 3mf file to the post for reference.

So after your comment I also changed some stuff. Now the gopher is visible in the “prepare” pane! BUT as soon as a slice the project it disappears! See the 3mf file
What I see before slicing.

gopherzzz_moved.3mf (955.3 KB)

Try setting the Z height for the world coordinates to 1/2 the height of the gopher. You may have to ‘merge’ the gopher to the item if you get an error message. I am travelling at the moment so I cannot slice it in Studio to see what is happening.