Yay! The 'export travelling library' option worked perfectly. All fields exported perfectly. And the citation codes did not break at all. So, in case anyone else needs this, the solution is here (as copied from Griffith University handbook; oh and even though I have Word 2003, I had to follow the 2nd option):
To recreate your library in Word 2003:
1. Press Alt-F8.
2. Select ENExportTravelingLibrary from the list and press enter.
3. Specify the library and press enter.
To recreate your library in Word 2007:
1. Open word file.
2. Click on EndNote X3 tab.
3. Select Export to EndNote -> Export Traveling library.