Filter on active user

Since version 6.4.2 you can create new custom hierarchies in the user dimensions.

That means you can use SQL query and import additional data into Issues cube and map this data to user dimension (such as Assignee, Reporter or Logged by) at the user level.
Try this query in DB:

SELECT u.user_name AS "Username",
    "Active"
FROM cwd_user u
WHERE u.active = 1

Then create a new custom hierarchy and finally select the active users in the report.

Martins / eazyBI