When I set a fixture's Hang to Focus Z axis value, the display in Augment3d shows the fixture has moved in the Y axis also. Is this expected?

I'm setting the Hang to Focus Z axis offset for ETC ColorSource PARs.  Per the fixture's manual, I set it to -12.67 inch (1.056 ft). When I go back and look at the fixtures in Augment3d, they hab=ve been moved down (as expected), but they have also moved in the +Y direction (unexpected).

Am I doing this wrong?