Please note: You should never manually delete a reference in Word. Always use the Edit & Manage Citation(s) option.
What you're describing (with the braces {curly brackets} and no reference list) is how Word displays when formatting is lost between EndNote and the Word document.
This can be fixed by finding the Update Citations and Bibliography button in your EndNote toolbar in Word. As long as you haven't changed anything in the curly brackets, your Word document and EndNote library should be able to work it out between themselves and put everything back where it belongs.
If you have changed anything inside the curly brackets, however, you may find the EndNote can't recognise the citation to fix it. It should just ask you to search for the correct citation to replace the one you have altered, but you may end up having to delete your altered citation and put the correct one back in.
You can (and should) turn off the formatting to copy and paste text from one document to another or move around paragraphs in a document (Word does not like moving formatted codes), but sometimes a Word document will simply forget to format the codes. If it has done this once, it is likely to do it again, but as long as you never interfere with the text inside the curly brackets (unless you know what you're doing), you can usually fix it by hitting the Update Citations and Bibliography button.
If the braces are appearing on other things in the text as well as your citations, such as around hyperlinks or a table of contents, this may be an indication that the field codes in your document have been toggled to display. This might be influenced by the Instant Formatting settings in EndNote. If your Instant Formatting is off, turn it on. If it is on, try turning it off and then on again. Then hit Update Citation and Bibliography again. Alternatively, highlight the text and hit Shift+F9.
If these methods are unsuccessful, please contact us.