Ability to create multiple succession plans for one position - is this expected behavior?

Summary

Ability to create multiple succession plans for one position - is this expected behavior?

Content

As an administrator, I created a position-based succession plan from the succession planning overview page.  I ran the incumbent process, so that the incumbent would be determined and tied to the plan in the tables (so that security would work).  Then I logged in as this incumbent's manager and went to the Career Overview page.  I had assumed that when I clicked on the Actions icon (which brings up the menu of transactions that can be performed), that I would NOT see the Create Succession Plan action, because one was already created for that position.  But I did see it, and the manager was able