after importing several devices to DCR some of them are UNKNOWN due to issues on the device side (wrong community, ACL, unreachable etc.)
When those are fixed, which is the best way to make DCR query again the devices for their type ?
Thanks in advance,
Correct. RME is most likely the app which populates device type and MDF data into DCR. DCR will not query the sysObjectID itself.
Yes, in a multi-server setup, the slaves will sync all DCR data from the master. They will get the same updates that the master gets.