Confluence user list shows duplicate 'native' and LDAP users with same username

Evaluating Confluence for our corporate needs. Initially created "native" Confluence users to get some people started using/evaluating it. Later, after their feedback was positive, we implemented LDAP and invited more people to evaluate it.

The original "native" users had their usernames set the same as their corporate logins. I expected that when we switched to LDAP, that LDAP user would "take over" and invalidate the original native user.

It did, but the duplicate "native" user is still showing up. I did some searches here and there was another ticket that claims this duplicate user problem (display only problem, but still annoying and confusing to people) was solved.

My thoughts about how this could be both fixed AND me still experiencing it on 3.3.1 is that perhaps the previous fix wasn't taking into account matches that have case differences.

For example, the "native" user has username "jsmith".
But the LDAP user has username of "JSmith"

Although Confluence correctly associates them with each other, I think for purposes of eliminating the duplicate from the user search, the current fix is looking for a case-sensitive match instead of a case-INsenstive match.

So perhaps the solution is something like (pseudo Java code...haven't programmed it in a decade)

if (NativeUserName.toUpperCase().equals.LDAPUserName.toUpperCase() )