In my opinion the easiest way to copy or move pages between two PDF documents.
- Open two documents in Acrobat and place the windows beside each other.
- Open the Pages navigation panel in both windows. (View>Navigation Panels>Pages)
- Select the pages you want to copy and drag and drop them to the new location.
- If you want to move the pages hold down the CTRL key while dropping the pages.
Adobe Acrobat Professional 8.1.1 was used in this example.