This documentation details a known problem and workaround.
Known Problem
If your department currently has its own Windows domain, you likely leverage the ‘Domain Computers’ group to restrict access to some resources. When you move to a shared domain like the NETID domain, ‘Domain Computers’ is not just your department’s computers any longer. However, the delegated OUs offering provides a convenient replacement for this functionality: ‘OU Computers’ groups.
Workaround
Each delegated OU has a special group which contains all the computers in that delegated OU.
Your delegated OU computer group is named:
u_msinf_delou_<delegatedOuName>_computers
These groups are updated with the latest list of computers in your delegated OU every hour.
Cause
N/A