having problem with citation like Author (Year1, Year2) from the same author

Dear community 

I am having issue with the citation style Author  (Year1, Year2) from the same author .

I am using endnote x7. 

I go to edit & manage citations and set the formatting - Display as Author (year) for each citation in the group.

and after updating-- i am getting as** (Harper (1940), 1942), 1939a))** in spite of Harper (1940, 1942, 1939a).

Please help me.

For your reference, I am attaching the screenshots in both formatted and unformatted citations.

Please contact Technical Support directly

1-800-336-4474 option 4 then 1



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