When you cast Vacuum a second time on the same units, the location of the pull updates, but the pull speed does not update based on the new distance.

Repro:
1. Cast Vacuum so that it hits an enemy
2. Before the first Vacuum finishes, cast it again so that the same unit is hit again, but at a different location

Result: The pull location updates so the unit is now sucked towards the center of the second cast. But the pull speed does not update.

Expected: On debuff refresh, the pull speed should update based on the distance between the unit and the new Vacuum location.