How do I merge two different endnote libraries and make sure there is no overlap of references?
There are multiple ways to merge library files.
Please see our website for those steps:
https://support.clarivate.com/Endnote/s/article/EndNote-Merging-Libraries?language=en_US
If this does not resolve the issue then please contact Technical Support directly
1-800-336-4474 option 4 then 1 or
https://support.clarivate.com/Endnote/s/technicalsupport?language=en_US