Hi,
thanks for the prompt replies. The magazine object is grouped. I then select "edit group" and move one side of the magazine down.
Here's what it looks like before:

and here after moving parts of the surface:

Just to prove the point that it's the UV's that get messed up, here are the renders. They're done with materials assigned by the render engine (Maxwell, i.e. the texture loads from within Maxwell, only the UV's assigned by the sketchup material get used):
Before:

After:

Am I doing something wrong?
Cheers
- Balt