“Orphaned” Maintenance Windows for SCCM clients

Last week, in my SCCM test environment, I noticed there are several maintenance windows applied to clients that I had no idea where were they come from. Symptoms: When using SCCM Client Center, it shows this particular client (MGMT01) has 3 maintenance windows (service window) assigned to it: PolicySpy from ConfigMgr 2007 Toolkit also shows the same: The problem is, there should ONLY be 1 maintenance window for this client: and actually, there is ONLY 1 maintenance window in total in my entire environment: I ran “SELECT * from v_ServiceWindow” against the site database and there is only 1 row

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