Does any one have some tricks on how to find a phantom reference that is appearing in my reference list but is no where to be found in the report?

We have multiple people working in the one report at any one time and we all work from the same group library so I know its not coming from a library I don't have access to.

Refreshing the reference list does not remove them. And I fear its because one person has manually edited a the citation somewhere in the text to something complete different (ie changed author name and year) but its still linked to another Zotero reference. However this means searching for the edited citation is almost impossible....!

Does any one have some tricks? I have the shading in word on but besides checking each and every citation individually to see if it matches the reference it is linked to, I'm not sure what else to do!

Thank you