I upgraded our Test setup from Jira 4.2 to 4.4.3 and created a new User Directory instead of the old osuser.xml, put that to the top. Everything works.
Jira reads the users from the correct place and the groups from the correct place.
But when I try to assign a user to a project the autocomplete gives me "No matches" and leaving it with only the username just gives an error, so I am not able to assign any user to a project role. Editing the groups works perfectly (Great job on the implimentation)
I have tried restarting the service and reindexing everything but still doesnt work.
When I browse the users it shows all the users there plus their group memberships from AD.