include shadowing in rdp file

mstsc /v:X.X.X.X /shadow:1 /control /noconsentprompt /f

If I connect with the /v: option the connection is established without problems, only with the fault that /f (fullscreen) is ignored somehow (ok, regarding to here this is by design).

mstsc "C:UsersABCDocumentsDefault.rdp" /shadow:1 /control /noconsentprompt

If I used an rdp file instead, I can set the fullscreen mode in the rdp file, but the /shadow option produces the following error on connecting: The session identification returned no valid session (translated from german). Only if I remove the /shadow it connects.

How can I use both – rdp file and shadowing – together?