The same issue (reporter abbreviation not displaying in APA 6) is occuring for me when using Endnote Web with the Word plug-in. Is it possible to update the style file the web is using? Or the plug-in, whichever would have the problem.
In addition to the missing reporter abbreviation in the reference, the in-line citation is putting the case name in quotes incorrectly i.e. (“Brown v. Board of Education,” 1954)
Thank you
Aman