SpikeyXXX, thanks so much for the _prompt_ reply and adding a visual explanation to boot! Unfortunately, I failed to supply images and obviously didn’t do a good enough job of explaining.
I hope these new images clear it up.

In the above, imageA, I have positioned a placeholder object w/ a local pivot that I need to match.

And here, in imageB, I have an object exported from ZBrush that occupies the same space as the placeholder object but it has an origin that resides at the world center.
So, I’m trying to match image B’s origin, only, to image A’s (retaining the world space location, for both, as depicted in imageA).