Only "original faces" being smoothed? (3ds Max) *RESOLVED*

Nevermind, fixed it already. For anyone wondering the same thing, I used the “Smooth” modifier and ticked the “Auto Smooth” box.
I’m a bit hasty at asking for help - well, whatever.

The original question:

Is there any particular reason why e.g. extruded faces aren’t smoothed anymore, even though the original primitive was?

Here, I have this cylinder:

Then I extrude from it:

Why is it that the new faces aren’t smoothed anymore?

…just select the hole object and add smoothing groups and that’s all you need to do.

oh you already fixed it…lol need to read the whole post first…