Bake motion blur behind glass / window

[bkuenstner]

hey guys,

I might have a stupid question but I can't figure it out by myself.

I would like to bake a glass window by the bake camera. Behind the Window are some moving objects.
When i bake the texture sequence of the window I can see all the moving objects but I am not able to apply a proper motion blur to them.
I hope that make sense to you and you understand my issue.

thanks a lot in advance

basti