I was able to replicate this in-house and working on the case you submitted for SmartIt/MyIT. I have been working with developer and post you a message if there is actually a sync available at the agent or not.
Our efforts with BMC Support did not bear any fruit in resolving this problem. We eventually disabled Atrium Single Sign-On, and pushed up our plans to upgrade to Remedy 9.1. We incorporated the use of Remedy Single Sign-On. So far during testing and the completion of the upgrade itself, we have not seen a repeat of the multiple problems encountered using Atrium Single Sign-On.