Unable to replace multiple pages in Acrobat Pro DC

I am unable to replace multiple pages in my PDF (just started today).  I am pretty savvy at doing this but for some reason today I can't do it.  I was replacing 9 pages and it only replaced the first page even though my page range was correct.  I tried multiple times and it would only replace the first page.  I ended up deleting and reinserting the pages.  HELP!  I use this feature all the time so I need to get this resolved as quickly as possible.