1. Make a backup of your document.
   
   
2. Reference Manager 12 in Word 2007: Go to the Reference Manager 12 tab and choose the "Convert Citations and Bibliography > Convert to Unformatted Citations" command.
   
   Reference Manager 10/11 in Word 2007: Go to the Add-Ins tab and choose the "Reference Manager > Revert to Original Text" command.
   
   Word 2000/XP/2003: Go to the Tools Menu and select "Reference Manager > Revert to Original Text" command.
   
   This will remove the reference list and revert the citations.
   
   
3. Press [Ctrl]+A on the keyboard to highlight everything.
   
   
4. Press [Ctrl]+6 (above the "T" and "Y" key) to remove any additional hidden field codes.
   
   
5. Press [Ctrl]+C to copy the highlighted text.
   
   
6. Open a new document and press [Ctrl]+V to paste.
   
   

You should now be able to format this cleaned up version of the document without running into problems.

Please note that you may get the "Reference Manager Select Matching Reference" dialog box when formatting the bibliography. This may be because you have modified the author name or the year in one of the references. Please click here for information on how to resolve this.