Thanks for the suggestion. I don't see anything unusual in Word Options > save. I have:

Save files in this format > Word Document (*docx)
Save AutoRecover information every > 10 minutes
AutoRecover file location > default location
Default file location > default location

Offline editing options
Save checked-out files to > the server drafts location
Server drafts location > default

Preserve fidelity when sharing this document > (the current document name is in the pulldown box)
Embed fonts in this file > not checked