I found this very brief reference online (
http://www.9thflottilla.de/9kg40.htm) to Me 410's being used in KG40.
"Kampfgeschwader 40
II. Gruppe: 4./KG40
In late 5.43 began conversion to Me 410 destroyers. In 6.43 redesignated V./KG2"
I can't find any more info on their operational history in this unit. Any info would be greatly appreciated as I can't recall my other reading on KG 40 mentioning it.