Our Service Desk images spare devices with SCCM and stores them until pulled for a new user. They are enrolled as they are co-managed. They may sit for a month before getting deployed. More than once I have been called to figure out why apps or policies won't install, or there is no device in the MEM console. Do these devices need to stay online longer post-OSD to be properly enrolled? Device clean-up rules are set to 60 days. Do they need to be manually re-enrolled when brought back online?