3ds Max 2013 Smoothing Group Issue

acealmighty13

I have a mesh that I have tried to export and re-import, copied and pasted, to try and get it to accept Smoothing Groups and it just won't do so.  The other models I have in the file accept them just fine.  Is there a check box option I may have accidentally turned on or off?

Eric Chadwick

It could have edited normals, which are fixed in place. Add an Edit Normals modifier, select all the normals, and press the Reset button, then Collapse the stack.