Qt Creator: qml.qrc with different prefix, problem in design editor

[francesco.girotto]

Hi everybody,
I'm working for a qt desktop application,
for organization reasons we have to store our custom qml files in different qrc prefix (not only the root prefix "/").
the qml.qrc file is structured in this way:

I can compile and run the application without problems,
but when I go in the Design space of QtCreator I can't see the preview for example of main.qml
and the designer tell me it can't find the qml files that are stored in the other prefix of qml.qrc.


I include qml files in otyher qml.qrc prefix in this way:

My .pro file: