That is sure vague. I just watched the DVD "The Rape of Europa" tonight, about the industrial sized theft of art by the Nazis and Soviets, also with a lot of coverage of what was lost in the bombings and fires.
I highly recommend it, it is amazing to see the worlds great masterpieces being handled and put into army trucks, laying on floors where they were tossed, and so on.
I see what you are saying - and that is an excellent insight. I did not ask myself about how that painting turned up where it did, but now that you mention it ... it has a real postWW2 ring to it.
I shall get hold of a copy of that documentary, if I can.
I also recommend a novel by Douglas Boyd, "The Fiddler and the Ferret". It is a thriller written by an historian of WW2 France, and the plot makes a lot of allegations about how art works stolen by the Nazis ended up in other hands. Fiction of course ... but interesting to read, and possibly based on fact.