Select the references you want to move to another citation manager
Choose Export...
Choose "bibliographic software" as your export format
Save as a text file (.txt) on your computer.
Open Endnote and choose import from the File menu.
Find and open the .txt file you exported from RefWorks.
Endnote will convert the text file and create your library.
You can create Group folders from your main reference list.
To sort duplicates from multiple imports choose "Find Duplicates" from the Reference Menu. In many cases Endnote will identify dupliucates at the point of import.