When you use the Cite While You Write function in Word, electronic codes are attached, linking your EndNote library to your document. These codes, called Field Codes, often interfere with publisher's software, so need to be removed before you submit your mansucript online. The process is easy, but permanent.
Removing Field Codes (Older versions of Word)
1. In Word, go to Tools → EndNote X6
2. Select Remove Field Codes
3. Word will open a copy of your document without field codes in a new window
*Never remove field codes from your original document! This change is permanent and once made, you will not be able to edit the document with EndNote again. Always make a copy of your paper and remove the field codes from the copy.
A good way to make a copy of your paper is to choose File, Save As in Word and give the copy a similar but unique name, like thesiscopy1 etc.