Issue in Outlook integration when assignning tasks to a resource using PSI

We we assign a task to a resource using PSI Outlook add-in for Project Server is unable to import new assignments.
The root cause of the problem was due to the fact that assignments created entirely through the PSI do not show the link in the progress column that allows clicking through to the timephased entry pop-up.
Microsoft has released a Project Server Rollup KB950816 to solve this problem.
The hotfix will be public soon.