EndNote in-text citations use coded or hidden fields, known as filed codes, which will display in grey when you click on them.
There are a number of reasons why you might want to remove field codes from you Word document, including:
You can remove these coded or hidden fields from your citations to produce a plain Word document: On a PC you can find this function under Convert Citations and Bibliography > Convert to Plain Text.
On a Mac go to the EndNote tab; under Tools select Convert to Plain Text.
EndNote will prompt you to save a copy of the original document with the EndNote codes embedded in it.
Remember this is a last minute fix for your document to give you a "clean" Word doc without any embedded EndNote field codes. Once you convert to Plain Text your document is no longer connected to the EndNote library.
If you need to add more citations or make changes to your citations in your original document these changes will not be reflected in the plain Word doc you have now created. You will need to edit the original document with EndNote citations and then repeat the process of converting to Plain Text.