Track changes reverts to generic "author" after saving document

[hmunson]

I am editing a document in Word version 11 using the track changes option. When I first input my edits it shows a time stamp and my initials as the editor for each edit, as usual. However, when I save the document, everything then reverts to a blue color and all of my edits change to "author" with no time stamp. I have tried following other advice I've read in other forums and nothing has worked. I tried saving the document which was a docx as a doc. That did nothing. I tried to copy the whole document and paste into a new document, and when I do that all of the previous edits disappear. The other suggestions have referred to other versions of Word that obviously have different tabs that my version doesn't have so I can't use those suggestions. My edits should be distinguishable from other edits that others have made to the document. How can I fix this? Thanks!