How can I open corresponding reference of inserted citation in Endnote

At least for Endnote X8 and X9.3, if you right click on the citation, you select “more” and the citation(s) will be highlighted in the list and give the option to “edit reference” as long as it is your library name in the Library column. Then double click on the name and it should open the record in your library. 

If it is the Traveling Library version, it can’t jump to the original version.