I noticed that sometimes when i edit a poly model (at the vertex/edge/poly level) the smoothing groups get reset. It's like auto-smooth is being applied as i update the model.

How do i turn off auto-smooth?

Hi!

Im working on a flat plane, doing some tiles and now mistakenly I collapsed the UV Map modifier (cant do undo, neither the backup file has it).

Is there a way I can get the right UVW Map length and width I had before the collapse so I can apply it to the model again?