Update idea rank should remove value for records removed from ranked list

What is the challenge?

When you click "update idea rank" in a prioritization view, it doesn't remove the rank value from any records that have been removed from the list.

What is the impact?

Over time, this causes records (ideas/features) reports that show the rank value to list multiple #3s for example. You have to either bulk edit remove all values then "update idea rank" again, or manually remove the values that shouldn't exist anymore.

Describe your idea

Enhance the "update idea rank" button in prioritization view so it also removes the rank value from any records that have been removed from the prioritization list.