Use the Copy WBS Options dialog box to specify which optional WBS information you want to copy when you copy a WBS element.
Notebook: Mark this checkbox to copy notebooks to the new WBS.
WBS Milestones: Mark this checkbox to copy WBS milestones to the new WBS.
WPs & Docs: Mark this checkbox to copy work products and documents to the new WBS.
Activities: Mark this checkbox to copy activities to the new WBS.
Do not show this dialog again: Mark to indicate that you do not want this dialog box to appear next time you copy WBS data.