The Body moves all the parts of a figure. That includes the IK Targets. If you have IK on and move the figure up by the Hip you can see the Toes point down to the IK Targets. However if you move the Body then the Feet stay flat. Moving the Body is a really BAD idea especially in animations. If you make a Walk Design and it moves forwards towards you and you like the movements but wish it was walking towards the Right instead. You can just rotate the BODY by 90 degrees and the figure will now start walking to the right.

Poser 5, 6, 7, 8, Poser Pro 9 (2012), 10 (2014), 11, 12, 13