You might want to checkout
this LEMB thread on Luftwaffe use of the Z1007... according to page 46 of "Il Ricco Bottino" (The Rich Booty) by Hans Werner Neulen [AeroFan, 2000]
"Only very few Cant Z1007's flew with the Luftwaffe in the Spring of 1944 and only four were given German insignia..."
Cheers
Peter D Evans
LEMB Administrator