I've found that using an intersection curve quite a useful tool on a recent project. Unforturnately, I think I may have found a drawback or bug.
If use intersection curve to derive entities from a body, if the body changes shape or I switch to a different configuration, the intersected entities do not follow the surface. This is odd because the entities that are derived are defined by that intersection of the body and are black. If you change the shape from which the entities are derived, they do not follow or regenerate as most other sketch tools like convert entities or offset entities would. Essentially it is creating converted entity from the body itself, I just don't see why it wouldn't follow the surface if it changes.
Here is a picture of what I'm talking about. The sketch has warning and you can see that it does not follow the altered solid. I feel it should as it would follow suit with how SW operates. Might this be a bug or lack of foresight into the use of this sketch tool?