...have you expored the thumbnails function, select the pages from one document and drag them to the other in thumbnail view...
To drag pages between projects, both projects must be open. The target layout must have the same page size, or a larger page size, than the source layout. If the pages you want to drag are facing pages, the target layout must have facing pages. If the source layout is a layout without facing pages, the target layout should not have facing pages either. To drag thumbnails between projects:
On Mac OS, press Option while choosing Window ? Tile. This automatically arranges the projects on-screen and displays them in Thumbnails views.
On Windows, Choose Window ? Tile Horizontally or Tile Vertically so that both project windows are visible, then display each project as Thumbnails (View ? Thumbnails).
Select any tool and click the pages you want to move in the source project. To move a range of pages, click the first page then press Shift while you click the last page you want to move. To move nonsequential pages, press (Mac OS) or Ctrl (Windows) while clicking to select individual pages.
Drag the thumbnails to the target project. When you drag a thumbnail page to a different location, the pointer indicates where the page will be inserted and the way in which adjoining pages will be affected.
A page icon pointer indicates that inserting the page at that location will not affect existing project pages. The Force Left pointer indicates that the existing pages in the spread will be forced to the left. The Force Right pointer indicates that existing pages in the spread will be forced to the right.
To move a thumbnail page between two spreads, drag the thumbnail and release the mouse button when the Force Down pointer displays. Spreads that follow the inserted pages are forced down.
When you’re finished moving pages, return the project to a percentage view. You cannot edit pages in Thumbnails view. If you need to edit pages in a reduced view, change the view percentage to a small size such as 10% or 20%.
If you dragged thumbnails to recover pages in a damaged project, delete the blank page that was the original page 1 of the target project (Page ? Delete). This page is no longer needed.
Andrew