May 14th, 2013, 13:34
Reset XForm condenses all your scale, rotation and other operations on an object, sets scale on the object to 1 and aligns the object's pivot to the Gmax world. If you like, it lets Gmax get an accurate handle on the object's size etc after we've been knocking it into the shape we want. Collapse the stack and you've got editable mesh or poly ready for animating or mapping.
Without this you can get really odd mapping problems, even if you use Reset Scale or Reset Transform buttons on the Command Panel (Hierarchy tab). It's also possible for Gmax to 'lose track' of the object's shape while we're altering it to the extent that a rotation animation on a flap will actually distort the object, not rotate it. I've had both these problems happen and only Reset XForm got the thing back under control.
Just do it before animating or linking other objects to it in a hierarchy.