I have an environment that has 2 AD Forests FORESTA and FORESTB. There is a one way trust setup where FORESTB trusts FORESTA but FORESTA does not trust FORESTB SCCM is setup as follows: A Parent Primary Site Server is installed in FOREST A A Child Primary Site Server is installed in FORESTB I have created a collection on Site Server in FORESTA using the following membership rules to grab computers that are a member of the AD group in FORESTA: select SMS_R_SYSTEM.ResourceID,SMS_R_SYSTEM.ResourceType,SMS_R_SYSTEM.Name,SMS_R_SYSTEM.SMSUniqueIdentifier,SMS_R_SYSTEM.ResourceDomainORWorkgroup,SMS_R_SYSTEM.Client from SMS_R_System where SMS_R_System.SystemGroupName = "FORESTA\\SCCM_Maintenance_Mon_8pm-5am" This query works fine. However when I try to create a collection on the Site Server in FORESTA to list the computers in a group in FORESTB no computers are listed. I am using the following query: select SMS_R_SYSTEM.ResourceID,SMS_R_SYSTEM.ResourceType,SMS_R_SYSTEM.Name,SMS_R_SYSTEM.SMSUniqueIdentifier,SMS_R_SYSTEM.ResourceDomainORWorkgroup,SMS_R_SYSTEM.Client from SMS_R_System where SMS_R_System.SystemGroupName = "FORESTB\\SCCM_Maintenance_Mon_8pm-5am" I have also tried to create a collection on the site server in FORESTB using the same query and that does not get populated either, I cannot seem to get any AD queries working in the Child Primary Site Server in FORESTB. I have checked the group name is correct and computers are members of this group and they are. Not sure why this is not working?