Changes extensions on the switch from one extension to another all at once. Specifically:
All administration that was associated with the current extension is associated with the new extension.
Any administration references on the changing extension, such as references used in a vector, coverage, and so on, are now referenced to the new extension.
All references to the previous extension are removed from the system.
If an extension is changed that is also administered on an adjunct, the extension on the adjunct must also be changed to ensure proper functionality.
For fields that are changing, current information prior to the change displays under From Extension.
A forwarded extension administered as a button remains.