I have modelled and UV’d a packing carton, and now I need to create another carton which is the same as the first except it is wider at the front and deeper at the sides. I copied my first model, then moved corner points around to create the new carton shape. I then replaced the material with the material for the new pack. The UVs are now completely off - the front face is stretched in a weird way, and I can’t seem to move and scale the UVs to get it working.
What’s the best approach? Would I have been better to scale the original pack’s points to fit the new size, rather than moving the points? Would that keep the UVs right?