Why do completed development goals appear in future performance docs?

Summary:

Content (required):

If an employee has marked a development goal as complete in their development plan, is the only way to stop them following through into every future performance document, for them to untick the 'active' box in the goal at the same time as they mark it as complete?

Version (include the version you are using, if applicable):

21D

Code Snippet (add any code snippets that support your topic, if applicable):