Hi, what is it that you can do in AE that you can't do in Nuke? In Nuke do you have an axis node which corresponds to a locator in you 3d solve? Can't you just move your path to that locator? For an alternate way of dealing with this kind of thing, you might want to having a play with the Reconcile 3d node (which is similar to AE's "toComp" expression)
Pete
Rogue Keyframe
Feature Film Compositing