If you found some devices in Maintenance mode in the Locater search, but even if you cannot find them under the Universe (Explorer TAB), there is no need to restore these models. Because they are still in the SSdb database.
Let me give you an example:
a) Suppose you have this Cisco device called Sim35785... under the following locations:
- Global Collections --> Cisco
- Universe --> Branch1 --> Sub-brach3
b) You can also see these informations in the Attributes TAB of the Cisco device:
- CollectionsModelNameString (0x12adb)
- TopologyModelNameString (0x129e7)
c) Then you right-click the device under the Universe --> Branch1 --> Sub-brach3 and choose to Remove, it will be removed only from the Universe. It is still under the Cisco Global Collections.
d) And if you do a Search, you will find it. And in the Attributes TAB you can find the device location. It is under the Cisco Global Collections.
e) You can copy it back to the Universe --> Branch1 --> Sub-brach3 container. Right-click the device under the Cisco Global Collections and choose Copy, then go to the Universe --> Branch1 --> Sub-brach3 container, right-click and choose Paste in the Topology TAB, then click on the Save button.
f) Now you have the device back on both locations:
If the device was deleted/destroyed, instead of removed, then you have to perform the SSdb restore. But you cannot perform a partial restore, to restore a specific device. There is only the full restore of SSdb database.