Changing the Requirements for a Learning Plan

Summary

I am looking for best practices when changing the requirements for a learning plan.

Content

How do you change the requirements for a learning plan? Do you create a new one and Exempt learners who completed the first one? Do you replace the existing requirement with a Training Offering? What if the new requirement replaces TWO existing requirements (EX: an Enrollment and a WBT) Neither way is easy. It would be nice if there was a way to just stop assigning the existing learning plan and start assigning the new one. Thanks in advance for sharing!