You're welcome Peter.
Dagneux is a German war cemetery where sometime after the war (between 1952 and 1961) WWII German war dead from 27 French departement (SE France, up to Toulouse and Clermont-Ferrand) were reburied after having been exhumated from their wartime graves.
So the fact that a crew is buried in Dagneux does not mean he died in this area, but somewhere in these 27 departments.
You can find the list here:
http://de.wikipedia.org/wiki/Deutsch...%A4tte_Dagneux