Rotated pages won't stay rotated!

I received a 5 page .pdf file.  When scanned, pages 1, 3, & 5 were scanned in "upside down" while pages 2 & 4 are fine.  Inside the 5-page document, there appears to be no way to rotate only the offending pages.  So, I extracted them to separate files and rotated them to be correct. (I deleted the extracted pages in the original document.)  I even saved the extracted pages as separate documents AND saved each new document after rotating the pages.  However, when I try to put the document back together, the offending pages are STILL UPSIDE DOWN!

I have tried to click and drag the pages back into the original document and I have tried to create an entirely new document from the multiple files to no avail.  Surely there has to be a way to do this!

Ubiquitous Information:

Adobe Acrobat Pro X v10.1.10

Windows 7 OS

Thanks!

Susan