Work plan removal
Under certain circumstances, you can remove a work plan from an activity by using the Remove Work Plan action.
When you remove a work plan, all information in the Resources tab, except for non-task children, is removed. Also, if the work plan has a job plan, the job plan identifier is removed.
If any task in the work plan cannot be removed based on the deletion rules for changes, you cannot use the Remove Work Plan action. You can still delete labor, material, services, and tools information, as well as any tasks that do meet the deletion rules.