Need Info From "Losses of the Eighth and Ninth Air Forces" by J.A. Hey

[A Castle]

Why was Arrison's body not recovered until after the war? Would the Germans have left the wreckage to sit for the remainder of the war without investigating? Is there any way to get the exact location of the wreckage (where Arrison was eventually retrieved)? My uncle was 1st Lt Foster Daniels (B), so I am very interested in this particular B-17 and would appreciate any info.