Note that you can have several section cuts in your model. Only one can be the active cut. On the main menu under View, there are two check boxes for section planes and section cuts. You definitely want section cuts turned on - that controls whether the cut takes place or not. You'll probably want to turn off the section plane, to make things less cluttered, but you'll need to turn it back on again to manipulate it.

By default, the active section cut is remembered with each scene (unfortunately, the item in the "scenes window" says "active section planes", which is not quite accurate - it should be "cuts"). Also, the active layers are remembered (note however that if you later add a new layer, it will be active in all scenes, and you may not want that, so you have to go back and update those scenes).

SO...

What I do is create a scene for each bent, a layer for each bent, and a section cut for each bent. Place each section cut on the appropriate layer. If you have any notations or dimensions that apply only to that scene, place them on that layer as well. Make sure that for each scene, only the correct layer and section cuts are active. It's a little time consuming, but once you've done it a few times, it's not hard. CB.