We recently changed the way our Moodle installation handles password changes. We use Active Directory and whenever a user's password needed to be reset, Moodle would prevent them from logging in. We changed it so that the user can now change their password within Moodle and it will sync to our AD. The problem is that our users are unable to reuse their passwords. This is problematic for some of our students who have learning disabilities.
We do not have any policies set in AD to Enforce Password History. How can Moodle be changed to allow the reuse of passwords? We are currently using Moodle version 2.5.1.