Well I've always had to hardcode it for the props that require Limits On (such as doors and drawers)

So I was talking about Limits and not IK. MAY be different for bipedals and props though. I wouldn't be surprised if it was somehow connected to the presence of a "hip" part :) Poser is odd like that.

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You just can't put the words "Poserites" and "happy" in the same sentence - didn't you know that? LaurieA
  Using Poser since 2002. Currently at Version 11.1 - Win 10.