all citations (1000s of them) have just converted to being one citation...why???

I added a new reference in endnote and when i went back to word and did an update citations and bibliography all my citations (1000s of them…) converted to being this one new reference… why??? is there any way of fixing this because its just **** my whole thesis.

Do you have backup files of previous Word files which had 1000 of citations correctly?

Do you have a backup copy of your Endnote library before adding the one you added?

If your answer is no for both, maybe nobody can help. Sorry.