The default behavior changed from Pro Pack to Poser 5 (initial release). An invisible Figure node can not be overridden any more. The difference is that the process you describe used to work with the figure and the body node in the hierarchy in Pro Pack. In Poser 5 it only works with the body node, still offering the desired behavior of quickly making everything invisible and then bringing back a larger part of the hierarchy by alt-clicking a body part. So essentially, Figure and Body react different. That is common though, for example on the parm palette, the Figure can't be selected individually at all, you have to do that elsewhere.