can you copy and paste the part of the cr2 where a bone name is used ? 
or tell us where the bone name appears ?  I dont understand where you are having a problem. :(

If you open the Group Editor, and select a part name from the pulldown list , it should be shown in red on the figure. Just be careful you dont make or save changes.  The other way you can tell is to look at the hierarchy editor, from that you can make some guesses about what names go with what body part.