There must be a reason it thinks it is a desktop machine. I assume these are DiscoveryAccesses rather than DroppedEndpoints. What appears on the scanner?
There is a know bug about not properly ageing out Desktop hosts. DRUD1-19310 which affects all recent versions (10.1 and later) which has yet to fixed - it was only found recently.
This would not have anything to do with why it would appear as a different thing on scanner and consolidator.