Can’t copy and paste content of pages CTRL A CTRL V doesn’t appear to work at all.
I guess I‘m going to have to abandon the idea of using multiple document files for my Book. So the next option is to copy each and every file into one monstrously long document and then organize that into a book.
The problem I’m having is that I don’t seem to be able to copy and paste the document content that spans 2 or 3 pages into the new pages of my new replacement 75 page one file Book. Apparently it won’t select all of the content complete. CTRL A apparently doesn’t select “all”.
Ctrl A is Select All, not copy, so did you actually issue a copy command?
And you don't need to copy and paste. You can select all the pages in one file in the Pages panel, then use the Move Pages command to move them either to a new file or one of the existing files.